Cumbersome and not just a little crazy. Of course it had been worse at the beginning, trying to weld together 13 different state currencies and etc., etc., into a single, politically-unified whole. After a predictably shaky start, things were finally calming down by the late 1840s--but then the gold strikes threw the gold/silver ratio out of whack and American silver mostly disappeared from circulation. Most of what remained in circulation were the tiny 3-cent coins and worn foreign silver.
The Americans adopted the British solution of 1816, and adopted a token silver coinage in 1853. Things improved again, and as above, the U.S. was finally able to risk weaning itself from foreign coinage beginning in 1857. (Another development in the 1857 revamp was the elimination of the half-cent coin--which, although there are additional reasons for its disappearance, I now know that the half-cent was then no longer technically required to address the $0.935-cent legal tender value of the French 5-franc coin--thanks!)
The deadline for the retirement of foreign silver was 1859, and--having weathered the Panic of 1857--the American monetary system was again finally beginning to round into shape.
And then in 1861 the Civil War broke out. The monetary system descended into chaos. Not for about a decade after the end of the war--1876, more or less--did American coinage return to anything like its brief prewar health.
So the U.S. declares its independence in 1776, wins it in 1783, formally begins knitting its 13 colonial coinages into a unified decimal coinage in 1792, and when is all that finally accomplished? My own answer is "about 1876, just in time for the country's centennial celebrations."
That's a lot of--exactly as you put it, Sigi--"cumbersome," with many
decades worth of chances for "cheating."

v.