What fish finder would you recommend for the sound and why? I'm hoping to find a good one for under $200, maybe via E-bay.

The boat I bought came with a new (still in box) Impulse 2800+ and a new (still in box) Impulse 3000 Loran-C. But neither has mounting brackets and the 2800+ doesn't have a transducer. Both are probably circa 1991 since the boat is a 1991. I have no idea how good the 2800 is or if it even compares to today's fish finders, so if anyone has info on the 2800+, I'd love to hear it.

Thanks!