A: Bolts would be recommended.
A: mo you have to furnish the bolts washers and nuts to fasten to your dock.
A: The ladder does not include mounting hardware.
A: Please contact the factory so we can provide you a drawing of the 5 Step ladder.
A: My top rung is about level with the dock mounting surface so figure a foot less than the number of rungs, despite what the picture shows.
A: About 58 inches.
A: I used stainless steel bolts with nylon washers.
A: 1/2" x 4" Stainless Steel Carriage bolts and associated hardware will prevent galvanic corrosion.
A: Will use through bolts, lock nuts, and large washers on the under side, all in stainless steel.