I took Angela and Thomas to a pond in Central Park where one can rent a remote control sailboat. It allows you to control the rudder, and the looseness of the sail. It took a few minutes to get the hang of.
They both loved it whenever they were the one controlling the boat, but got bored when it was the other person's turn.
We had to set a rule that your turn was over early every time you hit the wall with the sailboat. By the end though, everyone was getting pretty good at it.