Why a par 3 course? Just curious.
Once you're on the green the putting is the same problem, whether it's a par 3 or par 4 or par 5.
If you want to see how close you can come to the cup in one shot, then play some CTTH. If you're merely looking for a shorter game, then, again, try the CTTH.
Addendum. First post isn't really an excuse. Perhaps we should have some sticky posts, such as "Read This First," and a post among those stickies that says, "Search before posting."
Those things are common on a lot of forums. I'll admit, however, that there are always those who don't "READ THIS FIRST," and start a new thread on a subject that already has lebenty-zillion running threads.