I can hardly wait to see some results from this thread. I've been spending the last several weeks going through the static line course, and I've just finished my fifth free-fall jump. I've been having a blast learning how to skydive, but I'd love to find a way to make that harness alittle more comfortable when the canopy deploys.
I've also been scouring these forums and talking to people at my DZ for suggestions about making the harness less painful.
Maybe I can list the suggestions I've heard, and let people comment.
(1) Tighten up the leg straps.
This is a very common suggestion. Just make sure they aren't so tight you can't arch. Your instructor can be very helpful in showing you just how tight is practical.
(2) Watch you body position during deployment. If you're backsliding or tracking forward, or pitched, that can make it more painful.
It's hard to go too far wrong here while your still on static line, but it's worth listing.
(3) Wear some extra padding. I've tried wearing an extra pair of gym pants, but that didn't seem to help much for me.
(4) Stretch before jumping. This will loosen up your leg muscles, which are usually in a cramped position anyhow on the ride up.
(5) You may have just run across a hard pull. Sometimes the canopy just deploys harder than other times.
So far, the only thing that's worked consistently for me is to pace myself with only one or two jumps a weekend, and heal up during the next week. The one day I squeezed in three jumps taught me that lesson. It has certainly slowed down my progress, but I'm still having alot of fun, and I enjoy it much more than if I beat myself up with three or four jumps in the student gear in a day.