RE:I need ideas to make our pier more comfortable to walk on
I was going to suggest hydro-turf but a link I used to have came up empty, not sure if they went out of business or what.
Anyway - it is/was a product usually sold to be cut to spec for padding on the foot area on a PWC but I have seen instances where people used it on their swim platform and there is no reason that it could not serve you well on a dock.
here is the link : http://hydroturf.com/pwc_matcolors.php