Stanchion Screws and Line Adjustment
If the stanchions are loose it is probably because the screws are loose. If this is the case it wouldn't be a surprise if there were water leaks. The only thing that keeps the water out is some sealant or bedding putty and a tight screw. If you've noticed water leaks this is a probable source.If the lifelines are loose they should be able to be tightened at the ends unless all the extra thread has been taken up. If this is the case it's probably because people have used your lifelines to push and pull on when "helping" you dock. It's proper practice not to use the lifelines or stanchions to push and pull on - instead, try to get people to use the toe rail.When adding new screw locations for added stanchions try to provide some good bedding on the backside of the deck for fastener penetration. Probably use epoxy to seal the holes before putting the screws in, but not so much so that the screws will crack the inside of the deck.