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John Jenkins was first introduced to backyard trampolines when a business friend of his bought one of the pioneer manufacturers of rectangular backyard trampolines in 1973, whose founder was a contemporary of George Nissen and a world class gymnast in his own right. Jenkins helped his friend modernize that operation, and then in 1991, he pioneered international sales of the new round trampolines that HIS company was then selling in large quantities to Sam’s Club. He is founder of GSM International, Inc. that has been an importer of Avyna trampolines since 2004 and their exclusive North American distributor.

Do I need to put an Avyna in-ground trampoline in Winter Storage?

How deep does the snow get where you are located? No trampoline should be loaded with an extreme weight of snow and ice. Water and snow do not of themselves damage a trampoline, however, ice forming below the snow and on the trampoline mat needs to be carefully removed. A thick sharp piece of ice can cut the trampoline bed, so one should not jump on the trampoline until the ice is removed.

If trampolines are traditionally stored during the winter where you are located, your Avyna in-Ground trampoline can be removed from its stakes by two persons and carried to storage without dismantling it.

Is special drainage required to prevent water from pooling under the trampoline?

Special drainage is not required under your Avyna In-Ground Trampoline unless it is located in areas with extremely frequent high rainfalls and on soil that drains poorly. We have sold trampolines into all 48 states, and I know of only one new owner that felt obliged to install special drainage. In all installations, a bed of medium sixed gravel of several inches will provide a better base than just soil alone. Be sure to maintain the minimum depth recommended with a little extra safety factor depth.

If drainage is deemed necessary, you might look at having a French drain installed. Because of the 3rd Generation Avyna in-ground design, a drain, if needed, can be installed long after the trampoline is first installed.

Is a Safety Net Sold with an Avyna In-Ground Trampoline?

Safety nets were designed to keep jumpers from falling from a 3-foot high platform above the ground. A major advantage of an in-ground trampoline is that there is no 9-foot high ugly trampoline/net structure obstructing the view of a beautifully landscaped backyard garden area. Reasons why our customers have purchased Safety Nets with their Avyna In-Ground trampoline have been because obstructions or hard surfaced were near the trampoline or because they have small children inside of the enclosure for control.

Avyna has an excellent Safety Net which can easily be installed with the original installation or later if one is deemed desirable.

What is the Depth Required for an Avyna In-Ground Trampoline?

The minimum depth for a 12 or 14-foot diameter Avyna In-ground Trampoline is 26-inches. The 1st and 2nd Generation designs both require at least 34-inches minimum depth. The 3rd Generation Avyna design further minimizes the exaction requirements by requiring only a 12-foot diameter hole for their 14-foot diameter models – only 10-foot diameter. As a result, 3rd Generation designs reduce the excavation volume by 50 percent or more over older designs.

Does the Ground have to be Level to Install an Avyna In-Ground Trampoline?

For safe jumping, the top-rails supporting the jumping surface of all trampolines must be set in a level plane. For above ground trampolines, placement of the legs defines how level the jumping surface is.

For Avyna In-Ground Trampolines, a minor sloping area can be adjusted with the depth to which the eight foundation stakes are driven. The down slope stakes can be slightly raised above ground level. For the higher up-slope stakes, they may be slightly buried or placed on undisturbed soil that has been shaved down to achieve the desired level jumping plane.

In older in-ground designs, the entire excavation perimeter must carefully leveled to support the below surface frame members that define how level the jumping surface is defined.

In all situations in extreme sloping areas, the area should be leveled before the excavation process.

What are the four most important trampoline safety tips for a family to follow?

Family trampoline safety begins, first, with the purchase of a trampoline with quality components that will have a reasonable expected long life despite summer heat, winter cold, or extreme weather storms. The built-in safety design features of the trampoline, such as frame pads, jumping surfaces, and safety nets, will be of little protection to your children if they rapidly deteriorate and become “safety hazards”, not “safety features”.

Second, trampoline jumping should be a one-at-a-time on the trampoline sport, not a group jumping jamboree. A round trampoline by its design pushes jumpers toward the center of the jumping area; if multiple jumpers are on the trampolines, they will tend to be projected into each other, often with unpredictable results. With two children jumping it is possible to create a “double bounce”, where one of the jumpers is projected unexpectedly high by the weight of the other jumper. Where the double bounced jumper comes down and how is problematical.

Third, the jumper should always jump in the center of the trampoline, which on most trampolines is clearly marked. By learning to break one’s bounce properly and performing all maneuvers from the center of the jumping surface, the jumper will land against neither the trampoline frame nor the enclosure’s uprights which might cause injury to the jumper.

Finally, round trampolines are not designed to be gymnastic devices for flips and twists like were the design objectives of the originally rectangular trampolines for gymnastic use.

Should I Buy an Avyna Round or Rectangular Trampoline?

Backyard trampolines are play items which where the children jumping are usually not closely supervised by an adult. A round trampoline provides the optimum jumping surface surrounding the jumper in all directions making it a safer option than rectangular ones. A 14-foot diameter round trampoline has four more feet around the jumper than the short side of a rectangular 10-foot by 17-foot rectangular trampoline.

The cost of a round trampoline is much less than of rectangular trampoline because of structural differences. Packaging of a rectangular trampoline is much more difficult because of the long side rails; therefore, transportation costs are more.

As a result, ninety-five percent or more of the backyard trampolines sold are round. Rectangular trampolines are sold for backyard use principally when space limitations exist – that is a large 10 x 17 rectangular might be a better space fit than a 14-foot round.

Avyna makes excellent round and rectangular models, but round is always the least expensive option.