I've helped build two docks and several floating "barges" for fishing using parts/floats from this place.
Dock Building PartsThe biggest on we built was a "T" that extended about 40 feet from shore with a 20 foot "T" at the end. Secured at the shore using some old drill pipe cemented in the ground. It's been there for going on 10 years now.
Used a combination of deck boards and the "thru flow decking"
Thru Flow deckingThe flow through decking has held up very well over the years. It's nice on the feet. No slip.
The galvanized hardware made it real easy to put everything together.
Hardware