I thought surely you were joking - but I searched and found them on ebay.
Up for auction is a new Nacra 5.0 trampoline.This is a new item - made from durable trampoline mesh fabric which gives it strength and the ability to shed water. Hand crafted by the Pennsylvania Amish Dutch - Each tramp has two storage compartments and foot straps. We use Spurred grommets and a nylon strap is sewn into the grommet edge to give it added strength. You won't be disappointed with these custom built tramps.
The Amish is a group of people that believe in a very simple way of life and use very little technology in their day to day life. No TVs, no cars, no power tools, etc. I do believe they are slowly accepting some modern items ... I suppose sewing machines? The Amish are respected for their hand crafting but usually with wood. It's weird that they have taken up making trampolines for catamarans though or that this would be a selling point.
There are large Amish communities in the state of Pennsylvania.