Try giving premium to the top 5 - then taper off the pts.
100, 80, 70, 60, 50, 45, 40, 35, 30, 25 for the top 10 places
then 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, takes you down to 20th place
then everyone after that that completes the round gets 10
This discourages WDs
You can play with the numbers however your club wants - but bonus points at the top, and a flat score just for finishing out of the places works well to promote participation.