RE: Winter flying
His look good. Tipped slightly up. That's the way I set them up. They're designed with the pivot ahead of the CLR so the wind striking the low rear tends to level them out in flight. Tipped down is bad. The more air they catch the worse they tip. Drag brakes. And you'll also catch every depression in the snow when landing and taking off. Tipped up you can even almost occasionally sometimes get over a boot track without sinking it and stalling the prop in the snow.
Yell at anyone who tries to walk directly out and retrieve a model on the runway. Better to walk along the edge or the long way around so you keep the main strip ontrodden.