I fly a 150HP Super Cub, but often land it flapless. As the veteran of many bad landings and a couple of decent ones, here are my suggestions:
a) Check your approach speed. Too high an approach and over the hedge speed has been the most consistent reason for bad landings for me. It's a big fat wing that loves to float and float if you're a bit too fast and then you end up bouncing the landing.
b) Definitely stick full back for a 3-pointer. No, FULL back! No, more than that!
c) Try glancing out the side in the flare to get the perspective right.
d) You'll get used to the heel brakes and when you do you'll find them easy to use, quite intuitive and effective at preventing swings at the end of a crosswind roll-out.
e) To get feedback on this issue from 10,000 hour Super Cub pilots, post your queries in the Cafe Supercub folder at
www.supercub.org
Puttering along with the door open at 500 feet or so is sublime. Welcome to cubbing.
QDM