One made out of the parachute material....

Try Carrie Covers. I haven't used them, yet, but they are supposed to be lightweight and pretty good I think.

http://www.carriecovers.com/home1.php

Yeah I checked that out but I've heard some varying reviews about their stuff.

I bought one from them a couple years ago and they were great to deal with and fast on delivery.
I even measured wrong and had to send it back for them to add a couple feet to the length and they turned it the same day they received it and sent it right back out and didn't charge me for the extra work.

I know, I've read the varying reviews also...so you can be the guinea pig, okay?

Maybe ill give them a try Haha

What bad did you here? Are you looking for a cover to put on at the dock? I am interested as well.....deal for 2??????????

I have a cockpit cover but with how dirty everything gets between the bridges, I'm really just looking for a dust cover to keep the grime and birdcrap off. Doesn't have to be waterproof or uv resistant. What do you think frank??

I have a full cover that's very robust. It's a PITA to wrestle it on with one person at times. For what you're looking for I would suspect something like this light weight nylon would work well. Cotton or a softer cloth would probably be better for the finish though... at least that's the preferred car cover material for garage storage with cars.

Yeah I'm talking like a very light parachute material.