I don't have any paddling tips for you, but can tell you that massage therapy can do wonders to ease the pain of tendonitis.
Massage can release trigger points in the muscles as well as reduce scare tissue build up from overuse and injury. Limph Drainage can do great things for inflammed areas do to strains or sprians.
I live in Boulder and have an office downtown if you are interested in trying it out. I will be happy to offer a initial promotional rate.
Good Luck to you!