with all respect i would not recommend gloves for 2 reasons:
the first is that you do not feel how the sail is reacting as well as when you are bear-handed
and the second is that gloves are for girls. what you have to do is do lots of activities where grip is involved (i myself do gym and rowing) so you start to get hard hands and you no longer get blisters.
however if you sail in really cold conditions gloves are the answer
72 kg, 190 cm (6 ft 3)