I got a couple of spiffy used folding boat seats for my wife and I with swivel clamps to fasten to the bench seats of rental fishing boats, like the standard 14 ft. aluminums you see at resorts and marinas. So far so good.<br /><br />The clamps spread from 7 inches to about 12 inches, maximum. I don't know the brand, I think they are Wise - they were on the seats and the guy I bought them from said he bought them that way (no instruction sheets). Anyway, I see ads for similiar clamps and they are supposed to spread to 16.5 inches to 19 inches depending on the brand.<br /><br />One side of the clamp has wing nuts for adjustment and the other side of the clamp has a threaded sleeve, 1 inch long. It looks like it's an extension sleeve of some sort, to screw another threaded rod into to extend the clamp for a bench seat wider than 12 inches.<br /><br />I'm either missing something or I don't know how to operate these things.<br /><br />1. I need some info on how to mount these clamps on a boat bench seat. Is there a "proper" method?<br /><br />2. How wide are the bench seats in these type of boats, 12 to 14 or 16 ft open rental fishing boats? I think they are wider than 12 inches.<br /><br />3. How do I mount these clamps on a seat wider than 12 inches?<br /><br />Thanks,
