The side that is designated for swimmers is roped off and these swimmers are monitored, because most of them are visually impaired, but I know what you mean. If it's possible it'll be done. If I add the 2x12 it should protect the conduit from being in any sort of strain from hand holds in the future. They will be grabbing hold of the 2x12 .
If it works out, I'll probably just running the 2x12 on the left side of the walkway, which is on the opposite side that is designated for swimming. I'm suppose to go out this afternoon to look it over again, and tomorrow to do work on the dock. I'm going to try to get on the water and see if there is an option before I make my final decision. And no, I'm not for getting in the water. At my age it wouldn't be fun, plus I'm not the Olympic swimmer by no means frown
But thanks for the inputs. I will certainly keep all of these in mind.