Building a trampoline into the ground seems to be gaining popularity among parents. I don’t know if it is for safety or asthetics, or maybe both, but it is quite common. Landscaping contractors will charge quite a bit for a project likje this. But, if you’re willing to put some effort in, you can save money and have a beautiful backyard toy for the kids (and adults!) Check out the link below for instructions:
Inground Trampoline
Supplies List:
Eight 2X4X12 of pressure treated wood
Four 4X12 sheets of roofing sheet metal
Self tapping screws
16 cinder blocks with u shape groove