Hoisting is not where my problem lies. It is in gybing and sheeting.

Sheeting in heavy air, for an entire day, leads to fatigue, which in turn leads to poor decision making, which leads to injury. (I still have a stress related injury incurred in October or November which was caused primarily by fatigue and bad judgement.)

A poorly timed gybe ends in upset, resulting in too much "house keeping" to get back into competition.

To be succinct, the boat handles better when the spin is handled properly. Poor spinnaker handling takes me out of competition.