New to using wax, so looking for some tips. I've seen videos where the hole surface of the board is lightly waxed and where the front and tail are heavily waxed - and a few others that made less sense. So far in two attempts, I've not got it right and the board is still slipping out from under me when I don't want it to, particularly when trying to paddle with both arms. I should say I'm currently waist-challenged, so that might be a factor Is this just a matter of trial and error to get the right wax in the right place for me? Will it build-up over time, and how do you get it off (assuming I might need to one day)?