Hi Terry, sounds like you are on the right track with your progress. If you are more comfortable with a short, quick cut then I would suggest a backroll. When I am trying roll to reverts I usually only take a 6-7ft cut, just build speed quickly and hold it up the wake. Look over your lead shoulder and push your chest and hips toward the sky. You can spot your landing pretty early on a backroll, unlike the ts frontroll where you spot it almost as you land.
A trampoline will basically help you to know where you are in the air, it really doesn't mimic the water too much, because you don't have the pull of the rope factored in. It will, however, help you learn to spot landings and body position when you are in the air.
For hurt ribs, I hate to say it, but a good nylon jacket may be best. They nylon jackets are much stiffer than the neoprene ones and will offer more protection. They are also a bit more uncomfortable to wear, but if it keeps you riding, you may have to.
Later
Tiffanator
www.wakechicks.com