Be sure battery is in good condition, check all fluid levels, run it on hose and check for leaks. Wash, wax & ride!
This is all based on good prep during winterization. Don't for get to go over your trailer too!
I just use spray wax on mine. I have nothing to de-winterize. All I did to winterize it was to blow out the water with air and install a battery charger. So when spring comes I'm just going to dump it in the water and ride.