Definitely cross brace. Also keep in mind those steel pipes do corrode, I had to replace pretty much all of them on a dock before. Take a hammer ( claw hammer or ball peen, not too heavy) to them, underwater. You should hear a metallic ting when you hit them and they should not give. If you hear a thud or the hammer deforms it easily you need new pipes. They should be able to withstand a pretty good whack.
|