I'm getting ready to build a wooden fishing pier and have mostly made up my mind about how I want to do it. It's going to be 6' wide, 16' long, and near the end on each side I'm going to build two benches to sit on. It will have a swim ladder at the end, and the end will overhang past the last pilings. I decided not to put a roof on it as it won't really be wide enough, and I don't want to make a large platform and make it look out of place on a small .3 acre pond. I'm going to put the pilings in place and let them sit until the pond is full, and then finish the dock once I know where the "normal" water level will be.

Anyways I'm trying to decide on two things before starting:

a) There is alot of limestone rock and it's not going to work to dig deep postholes. I was thinking of digging postholes as deep as I could, and then using sono tubes or maybe even forming up some "boxes" around the posts to fill with sackrete above the pond bottom.

b) Can I get away with treated 4x4s for this project?

Any ideas would be much appreciated, and I'd also love to see pics of everyone else's docks. (Already read and read again the pier building thread)

Thanks,
Eric