I would go with a smaller cut sail for heavy air days.

Usually big air days are gusty and in gust you want the top of the sail to dump the power, I would bet that a reefed comptip wouldnt dump the gusts and the downhaul probably wont bend the mast and dump the power like you want it to...Plus all the above mentioned issues with holes in sails, and customized hook points. A smaller sail might be more expense in the short run, but you will make up for it how the boat performs and less frustration. Or you could hot knife a old sail or a used sail. Cheap and easy.. I used to reef my Dart on heavy air days and it never worked well, the bottom of the sail never stayed rolled up and it big air you dont want anything flogging.

I just used to sail with my fat girlfriend on heavy air days and my skinny girlfriend on light air days.

Bill