Jeff,
If you do ever play a match against Shivas, here's my advice:
1. Play nice and slow, preferably with a complex but repeatable pre-shot routine.
2. Use you rangefinder to get your (and his) distances to the pin and all other important landmarks.
3. Use a bright red or yellow putter cover and leave it somewhere on the green while you putt.
4. Make sure your pre-putt routine involves meticulously aligning your cheater line to help you aim.
5. Before holing out, make a snide remark about people who use long putters.
6. Occasionally mix in a Caddyshack line, but intentionally mess up at least one of the words.
7. Ask him if the two of you are playing "golf" (small g) or "Golf" (large G).
8. By him a bratwurst at the turn.
9 & 8.
(Please mail me half your winnings.)