I keep the ice cold in the refridge/freezer that makes ice. The hand sign I use is a simple 'hi' wave, no need to depress them more than they are.
Sails 'trimmed' ? I don't have a barber on board.
I only have to backwind the jib if the wind is light or I'm moving less than 4 knts, that's not often. Gemini's are one of the smallest and lightess production 'cruising' cat's on the market today.
Without the weight, we suffer for momentum to tack in chop.