I totally agree that it's great free publicity for Parker. I'm just worried for you that the execs at Parker might not see it that way. The way the laws are written, Parker could pull the plug on any website that uses their trademark or corporate name in its domain name.
For instance, there was a website that was started by Chevy fans. GM was able to force them to sign the domain name over to them. This kind of legal action can be found all over the internet. It makes no sense to people like us because it truly is free positive publicity and it's non-commercial.
I like the pilothouses.org domain much better anyway. Like you said, it opens the door to so many more boat owners. It also can't be claimed by some hot-headed corporate executive.