My break system was trashed.. ripped the safety tether off one time (in a rush and only undid the chains...
), and a few of the fittings completely rusted out as well...
To me, break systems and salt water are just about as compatible as trailer lighting and saltwater...
I've been w/o them for a while and the combo of a Nissan Titan and a 20' SeasHunt Triton seems to do fine.
Take it down 10-15mph from normal, leave space, pay attention.