You are doing the most important thing and that is covering up. We find leaving the tubes inflated by far the best option, making sure all the salt residue from the season has been washed off and then applying a protectant combining a UV blocker.
Some of our products are available on line
http://www.rib-shop.com/prodtype.asp...ageHistory=cat.
Also available are the products for winterising your engine.
Any questions don’t hesitate to give us a call.