Thought I'd ask for the wisdom of all you water men/ woman on this main forum

Basically when you are down the beach for more than half the week, how do you protect your car from damage? (Going to get worse as I now work on the beach too

)
Lets just say had I realised I'd end up like this when I took up surfing, I would of just bought a beat up old 4WD rather than a new car of which now the parents (helped chip in a bit) keep ranting on I will end up driving to the ground in a few years time.
I guess the worry is the sea salt, air and sun etc which can damage the car. So how's the best way to prevent any such damage? Would washing the car every week be the best plan of attack? I'm still servicing it and everything by the book.
Cheers all and hope you get some waves this weekend!