That's what I did and the 70 ft. pier has been in ever since. I purchased 11 foot galvanized posts from Menards and bought sleeves that slide over the posts from there also. The sleves bolt to the pier studs.

We put all the secions together and pushed it out on the ice with a tractor. The sleeves already attached showed us where to drill the holes in the ice. Pier was pushed aside easily to drill holes, and then the sleeves were alligned over the holes and the posted driven in as far as they would go. We even wedged the pier up before tightening the sleeves to keep the pier above the water line. It wasn't that bad at all.

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.