Shorter shotguns capture sounds on a wider range. Longer shotguns have a narrowe range. If your actor is going to be moving around a lot, it's much easier to get a consistent sound with a shorter shotgun.
To eliminate minor wind noises caused by moving and such, you would need to put on a wind protector onto the mic.
For any real type of wind, you would need a boom mic, much thicker, and eliminates wind much better. Boom poles are good to have to hold the mic over the actor's head.
Lavier mics are also used for actors, these are tiny mics like the ones conference speakers use. But, they are bound to introduce a lot of rustling noise when the actor moves. This noise can be removed in post-production, if you want to spend time on that.