These are a few images from the golf hole I did. It features a motorized windmill. The actual cup is up a small ramp and uses the Light and Sound element from Insectoids to add some excitement.
The hole was a par 4 due to two doglegs.
I had a fair amount of gearing in use to get the fairly massive (about 30 beams in all between 4 blades) windmill arms moving smoothly, but not too quickly. I used a '35 motor for power. I tried to use a Technic turntable but stumbled over making all 4 arms symmetrical. The 40 tooth gears and technic triangles were a compromise but worked.
The ball has to go all the way through the windmill from front to back. It took a certain amount of timing to get past the blades with the correct momentum. The windmill ran continuously for 4 hours (powered by a train speed controller at full throttle, the blades make perhaps one revolution every 10-15 seconds)
After exiting the windmill, another dogleg brings players to the cup.
More soccer players are watching the action. The actual scoring spot is the depression formed by the two red slopes (front side of depression) and the sounder buttons (back side of depression). Getting the ball up the ramp at the right speed is very tricky and cost a lot of folks a lot of strokes, since I had a rule in effect that any ball that came to rest anywhere on any baseplate had to be restarted (I didn't want people swinging their putters near the lego).
Another team managed to shoot a natural 4 with the hard sounder, for an adjusted -1 score on the hole.
The best I personally was able to do in practice was 9, and in competition I shot a 19 (not the worst score turned in by anyone, actually, that was a 23).
Here's a quote from Bernie, our group manager:
Just for the record - I did not purposely try to destroy your awesome Lego golf hole. I just got frustrated and moved back and took a firm putt - by accident it took the guy off the top. I think your Lego golf hole was the best of all.