Seats?

[Fat Tommy]

I just bought a 16ft fiberglass tri-hull boat, open bow for 800. Problem is this, no seats. It comes fully equipped with downriggers and rod holders with a fish finder. There's just no seats. This really isnt a huge problem because I'm guessing it would be fairly simple to make seats for it, just not sure on where to start. Help would be appreciated and if wanted I can post pictures of the inside of the boat. I know this doesnt mean anything but it came with a 85hp evenrude outboard that works 100%.