Hi, apoligize 4 my english
a question
rail to rail is same thing that "pump" on board by flexion of legs?
tnx
nope
rail to rail is how the board transitions from your heal and toe side in turns
pumping is a series of motions of weighting and unweighting on the fins and rails , some people do it more off the fins and some more of the rail but the best surfers do it with a blend of both .