Reminds me I have to clean the M-2 I took to the beach today to shoot pedestrian feet. I left the UV filter on because I felt a fine mist in my face...

I definitely won't take a valuable camera out on a windy, sand-blasted day. But those are probably the days I should take a good camera out.

Maybe you could pick up a Ricohflex or some other low-cost, reasonable quality TLR...

But you asked about protecting your Hassy.... Are you crafty? When backpacking with OM-4, I used to simply put a ditty bag over the camera on the tripod while walking around. Then when shooting, the camera would be exposed and vulnerable to rain, or whatever.

You might make a simple sack of coated nylon to just throw over the whole get-up. Or maybe just bring a windbreaker and throw it over the camera. Dual purpose... Once the camera is safely in the bag you can put on the windbreaker.