RE: When to fly and when not to fly...
Flying in the wind is great if you have the plane and skills for it. I have flown a U-Can-Do 3D in howling winds .. like close to 20MPH.. I can take off and land literally in 5 feet!! Landings are really fun as you can harrier them into the wind. I have landed my UCD a few feet in front of me a 1/3 power. I have horizontally hovered too!! Crosswind, headwind.. doesn't matter much with that plane or this pilot. I won't fly my big CAP or Edge in a high wind though... to much $$ if something goes wrong.
Bottom line, even when you are highly experienced, it always helps to have something cheap you really don't care about so you can fly in a gale, rain, who cares!! ... it really is a lot of fun!! Of course I save the big expensive planes for the nice days, which fortunately, outnumber the windy ones many times over here in AZ!!
DP