retired1 wrote:One possible way to use the least water would be to get a small section of 2" PVC pipe. Cut the exit end on something like a 45 degree bevel.
A float could be a piece of wood also cut on a bevel to force the golf ball to go where you want it to go. Since I have it, I would use a 1 3/4" hole saw to cut it our of a 2 x 4. Consider using poly urethane or a spray lacquer on it to waterproof it. Alternative is to microwave it for 1 min on high to dry it out. Caution, the wood will swell slightly from the water. Best to have 2 dry ones. By making it a little bit taller you could control the time by controlling the starting amount of water in the pipe.
Options for the wood could be a proper size plastic fish bobber or a large cork.
I like this idea. Its simple and seems hard to mess up at first glance at least