So basically, you don't. You need to pay the forces enforcing your property rights somehow, and with taxation comes comes either a large overhead as the state needs to basically become a Forex trading house to ensure it can pay in whatever wildcat currency is worth the most or to standardise to the numeraire used to pay the people with guns enforcing private property
I will admit this is useful, although the fluctuations is a PITA and if you can do GUSD it is better. I've done this to pay contractors in Brazil and other places with high banking fees.