Two weeks ago a lady turned in front of me and killed my truck

Tomorrow no more bed, but only a trunk w/split fold down seats to put the occasional wave board. I guess i was spoiled always carrying several kites, boards and equipment in a bed with a hard lid. I already verified that i can carry enough kites / boards and accessories.
The issue is i don't want the new car smell to replaced with salt water stench in three days. I was never concerned with wet shorts, harness, towel, bar (occasional kite). Now i am trying to determine how best to accommodate them.
I am too lazy to load and unload all my shit every time i think there might be wind. In addition there is not direct access to a shower at my main launches. I had several ideas and welcome any thoughts. I don't think there is any good solution to Air / water tight the trunk with split seats, although i did consider Line X spray the trunk.
A more practical approach I was thinking of some combination of containment. Wet shorts, harness, rashy, wetsuit, bar in a water / airtight box. Large Vaccum pack type bags for kites, which i have used for travel. Some type of water tight socks/bags for boards. Driver seat cover.
What have you found that works or doesn't? I will quickly destroy this car if i don't address it early.