Kite tips, at the windward mark start hoisting earlyier than you think, this applys more if your racing with a spreader mark, by doing this you have more kite out of the chute by the time you round the mark and then its easier to get the last bit up and get going which also avoids you being rolled by boats behind you.
Gybing wise try and float the kite round so its filled the whole way round.When your out triming the kite on the wire always make sure that the hand you have any wraps round is not the one you use to grab the handle (in my case i put the wraps around my back hand as downwind i use my backhand to get in.)