First pic IS a Super Cub, albeit one fitted with some kind of belly pack. The machine dropped through the ice looks like a straight-tail C170 or similar to me.
You cannot over-use the carb heat control in any A-65 equipped Cub. The little Continental may be one of the most reliable aero engines of all time, but it is highly prone to carb icing.
Little-known factoid: in the USA, Continental motors called themselves just that because, in the early part of the 20th century, technology from the Old World had a far better reputation than the home-grown equivalent. How times change!