That's awesome!
I've always wanted to be good on a trampoline,,, but when I was about 7 or 8 I went to a friends birthday party and he had an accident on a trampoline and spit his head open.. Needless to say it was a pretty horrible site at a kids party, blood everywhere. And he had like 16 stickes and a dent in his head after that.. I've been scared or trampolines ever since..
I get nervous as hell watching little kids jumping on it coz I just picture their next jump they'll stuff something up and f'k themselves up....
Still, that's a nice big trampoline you're friends got so it looks a little safer..