Inflatable boat guides. Over the last 4 years, almost everyone has switch to these boat guides. They are extra soft to help protect your gel coat -- yet tough as nails. They do not damage props when they are run over and are much kinder to our $1600 water skis and fins. Yep -- pricy but cheaper than fixing the gel on your boat or buying a new ski, and they hold up well to abuse. We have looked at the rest and found these to be the best.