back when i was a kid i used to love hopping on trampolines. it was so common to have one in the yard but a friend of mine had one. there was no safety net back then so occasionally somebody flew off the thing. but the best thing about the net is not the safety element but the shadow it casts!
in addition to the shadow of the net on the jump mat there are basically four gradients of shadowing on the grass
1 full shadow from the solid parts, the frame rim, posts etc
2 shadow of the net through the jump mat
3 shadow of the jump mat without the safety net
4 shadow of the safety net alone
ok enough with the shadows my grandkids are getting impatient waiting for me to jump with them. good thing there's a safety net these days.