My boat stays in a 3 sided building at all times. It's 50ft deep so my boat is tucked so far back that it doesn't get any sun or rain on it. I just have a cockpit cover currently. I'm looking for just a dust cover to throw in it to keep dust and any bird droppings that may land on it. Anyone have one or know of a cheaper option for a cover...

I got one from iboats.com for around $300 about 4 years ago just for that purpose on my boat lift. Their application list has the 311 listed and it works well and has held up just fine. Has a done of straps to it in case you want to use it for trailering.

I also bought an iboats cover. I use it to keep all the bird droppings off deck and cockpit cover while in drystack.
Good quality and has elastic for a snug fit. Also as mentioned has loops and straps for trailering.

I also bought a cover from Iboats, it was a Carver brand semi-custom, it fits my 312 really well and I have even trailered with it. About 375.00 all in.

I bought several cotton bed sheets & had them sewn together... cost less than $100.... covered my 32 Fountain... then my 30' Y2k and now my 290SC..... over 10 years old & machine washable!

What one did you guys get from iboats? Does it cover the silent thunder? Got any pics?

If you order one from iboats order one for a 336 and it will cover the swim platform (silent thunder) also. That is how I ordered mine.