Forks locked or unlocked

I have not thought of this but someone must know, my bikes like most have suspension on the front, Rock Shox, when you ride in snow would you have them locked off.

AQlso does anyone have any knowlege of the Rock Shox Recon, on the bottom it has the usual fast/slow rebound, a red cap, but you can unscrew it and take it out, there is what appears to be an allen key in the cap! (knowing me I broke it and it shouldn't come right out)

Thanks