a 6 pt scotch game is do-able, but usually favors the best golfer. The way it works is
On the first tee, the 2 balls farthest to the left are partners, and will remain partners for 6 holes. On hole 7 the 2 drives the most left (cannot be the same two partners) are now partners and then on hole 13 the final parings play for 6 holes.
Each hole has 6 bets.
2 points for low combined score
2 points for low best ball
1 point for closest to the pin in regulation
1 point for birdie or better
if a group sweeps all 6 points you double the points to 12.
Now there are several ways to bet. You can name the price of the points say $1per, or you can create a pot. Everyone throw in $50, and after the round you total up all the points and figure out how much each pt is worth based on the $200 pot.
Some people may scoff at throwing $50 in the pot, but in most cases the worst golfer will win several points thus in reality only loses $20 max.