I just read Madmartigan's thread on his hooks used to hold the jet pack on. I'm probably going to be making a jet pack out of sintra so I'm not expecting a lot of weight.
What I'd like to know is: where does the webbing that comes out of the holes in the backpiece get attached to? Can it hold or will it sag? I should expect a bit of stretch/sag, right?
I think this opens up a whole can of worms for me because my girlfriend is making my vest with nylon/sports kind of fabric and she wants to put the opening in the back so I can slip it on like a smock. I suggested a side hole, since the back piece is going on.