Re: Air Dock
I've had an Air Dock for 2 years now and couldn't be happier with it. Used properly (which is really easy), it's an effective way to keep your boat out of the water and really easy to use. The best part is that when I moved slips last summer it took about an hour to un-hook, move and set up again. I'm in a covered slip in a marina, so wakes and waves aren't a problem for me. I haven't gotten it 'hooked', so I don't really know how vulnerable it would be, but the material is pretty thick. I don't think an accidental mis-cast would be an issue.
If you buy it brand new I believe it comes with a 5 year warranty. I know one person who has had hers for 5+ years now with no major problems.
Have you contacted the manufacturer ? I haven't had to do that myself, but I believe they're pretty responsive to questions.
Whatever you decide - good luck!