I had a 13" Combo, Flood & spot beams, It was great. Don't mount on top of bumper with the cast brackets, someone will decide they need it more than you and break the brackets.
Don't go too big or you really can't see once you shut it off and go to low beams!!
If you had a 4 season unit like brands, Arctic Fox (already mentioned) or a Roughneck, then might not be too bad. But normal RV trailers are bad to try to use even in the late fall in Alberta (-10 to 10C).
It's called a Jigger, for getting rope under the ice to then install commercial fish nets. It is made out of wood so it floats against the underside of the ice. The operating rope is tied to a movable steel arm. You pull on the rope , a pick on the wooded arm sticks in the ice and pushes the...