Beg do differ

Over many years we have found that you cant beat rail tape if you have a chipping issue. Good rail tape (which we cant get enough of) is half the cost of getting your board repaired.
Rule number one though, dont use it if you don't need it.
Everyone is different and some 'stab' more than others with their paddle and some boards mark easier than others.
Rule number two: Dont put rubber stripping on your paddle. You wouldn't put it on your fin and it has the same affect each time you stroke. It really kills the efficiency of your blade.
We have found that two layers of Electrical tape (sorry Bnacca's) around your blade has minimal impact on the performance of your paddle and will help with scuffing on your rails. Just replace it as it wears.
It wont stop the big knocks though and if you are getting more than your fair share of chips you need good 3m rail tape.
Each to their own of course but this is what has worked for us over many years.