Interesting approach, refusing legal tender. Oh well, the following is so loyal, I am sure it will not dissuade anyone. Personally, I always found that keeping a large amount of small bills on hand throughout the season works well. (Especially when the entry is $5 PLUS optional $1 ace pot, as in LL.) Start with a visit to the bank, replenish throughout the season if needed. An inconvenience, but then again, any contribution of time can be looked at as an inconvenience.
Thanks for bringing back Dabney Doubles again, I hope to make one or more this year, since I now work out of Gladstone, the possibility is improved.