I will be heading to MD (from PA) in July to fish the Pocomoke River. It is tidal to upstream where I will be fishing and I presume brackish. How/when will I need to flush the motor (40/30 Merc jet)? What other precautions would/should I make to keep my equipment in good shape? I also presume that I should wash the trailer down. Should I do it daily? I will be there for 4 days and taking the boat out everyday after fishing. I would appreciate any/all advice.