On my Thanksgiving week Nevada trip I encountered Cash King Checkers
for the first time at the Riverside in Laughlin. It was nickels (bad
paytable) and Quarters (99.9%).
I played 1 quarter per checker, like BD suggests.
Coin-in: $165
Coin-out: $105
Three Jacksons resulted in zero bonus rounds and 64% return. It
seems like it could be fun. You probably could run a decent amount
of coin through for slot club points, with 1/3 games losers after the
deal. My 74 games is a very small sample, but I am not that anxious
to try is one again.