The benches on my dock are 2x6 with 2x4 back board and a 5/4 board for the hand rail. the stainless cable i picked up at a local hardware store here in ohio. they were cheaper then the big box stores some how. but lowes, TSC, Menards or Home depot should have it in the hardware section. I also used 2 eye bolts on the dock and a threaded turn buckle it has 2 eye bolts and a threaded block between them and you tigthen it to draws the wire tight. I need to post the pics of my walk way it turned out good. I used farm gate hinges for the conectors to conect the dock to the walk way and the walk way to the 4x6's that aare cemented on the shore

A weeks worth of vacation, 59 hours in a John Deere 160, 2 logs of Skoal, 1500$ in fuel, Lots of help from the neigbors and my old man, and a wife with an open mind to let me dig a pond at are cabin. All i can say is life is good!