I just posted a similar inquiry on the gear section:
www.seabreeze.com.au/forums/Kitesurfing/Review/Waist-harness-advise?page=1#6Due to past back troubles, I can't risk just demo any waist harness, and see... so any suggestion or comments would be appreciated.
My post:
Which harnesses give the best lumbar support?
I have a long history of herniated disks due to sporting injuries. About 10 years ago I tried to switch from a seat harness to a waist harness. Make it short: after half an hour I was off the water for two weeks and took 2 months to fully recover. I understood it may have been just that particular waist harness, but I could not afford to experiment. So I kept my seat harness and modified it to suit wave riding (sliding rope spreader).
Now, I am thinking of giving it another try.
I ride the Perth shore breaks mixed with some low key ol' skool jumps, usually powered up on a smaller surfboard. The harness does not have to be wave specific, as I can modify the spreader easily for rope/sliding. The most important thing is a firm lumbar support with a relatively low attachment point.
I appreciate any advise, especially from those with similar back problems.