A few things you should do when hauling your boat and preparing for a hurricane
Take down all of your canvas—sails, sail covers, biminis, seat cushions, take it all down.
Make sure that your boat is watertight, shut all hatches, seal anything that might be leaking. There will be a lot of rain, be ready for it.
If you can, tie the boat down to hardpoints on the ground with some tow-straps (you can most likely pick them up at your local hardware store).
Turn off all your boats electronics and disconnect the batteries, if your boat does end up getting full of water you want to do what you can to prevent all of the electronics from shorting out.
If you have a propane stove shut off the gas and disconnect and remove the tank; also remove any extra oil cans, gas cans and other combustible products from the boat.