M., trampolines are great fun for kids and gymnists, we had one, my dad was a trampoline artist, not enough can be said for parental guidance, we only allowed two kids to jump at a time, and they could not jump unattended, the netting around it is great, but it also makes the parent feel like they dont have to watch them, and im sure accidents have gone down alot with the netting attachments have been made, one thing about round trampolines is they are built for design to keep a person in the middle, so as a gymnist on the tramp and doing flips, she will not need to be on the side to flip, stay in the middle its not height is the speed of the spin, if she stands near the edge the edge is designed to push her back to center, so her flip will take up more space and land on other side of trampoline, so when flipping always stand in middle as with any other tricks , most people in the arts of trampolining usually have rectangle mats, so do tricks in the middle and you will stay in the middle, doing tricks near the edge to think you need legth to do a trick, is not the right thinking, if you need legnth for a trick do it on the floor on a mat, so work on staying in middle in flips and other tricks, just enjoy and have fun, if you need any other information on what kinds of things you can perform on tramp , let me know and i can email some to yah, have a great day D. s email me at; ____@____.com