Scotty makes a product to do precisely that. You'll wind up diddling around trying to create a solution to a problem that's already been handled. If you can afford it, you'll be better of getting the commercial version. It doesn't have to be Scotty. Removable is important to you, and those are the easiest to remove I've seen.
PFD's (Life Jackets)
Touring Kayak Paddles