Yes you can just use Suncure on a small ding. Q-cell is for filling deep holes and then fiberglass over it... Q-cell mixed in resin requires catalyst since the sun's UV rays will not penetrate and cure the resin. But you can just use the sun cure on surface cracks and small dings.Note: Use Suncure and polyester resins with polyester boards only! Do not use on EPS (epoxy) boards