Here's one I found, nice antenna, not much weight either. Couldnt really determine if its for fta or subscription service, but you could prob swap out lnbf if needed:
Winegard RD-9046 - Portable Satellite Dish
I have one of those. I used to take dish on my camping trips. it is 18in circular lnb. easy to point. the real con with them is that the kids alway ran it over or I would trip over the cable so i would always find myself pointing in the dark. I let my neighbors use it on their boat now. they just plop it on the dock.