Still is, much easier to pull off at the younger ages. Once the girls started to age into the ECNL / DA age groups the clubs were much less tolerant of guest playing.I dig this GOAT thing, it should still be a thing.
The most recent grouping, U-Littles, got quite a bit of heat for competing at a bigger tourney and coloring outside the lines in terms of some basic guidelines that were established in terms of how many players could be from the same club. It gave off the perception that the players were hand picked to build an "All-Star" squad and the discussion of what is fair and whether this belonged at the tournament the Goats entered was discussed back and forth with some heated exchanges.
I didn't have an issue with it because the Goats were non-traditional to begin, so any "rules" established in creating a Goats team is in itself something that is meant to be broken. Initially the concept was to pick the "parents" because the manner in which they carried themselves would either be conducive, or not, in creating a harmonious environment for a let it all hang out weekend of fun. The players were literally from Flight 1 through 3 and no one cared. Girls had water balloon fights, ate whatever they wanted, danced, painted their hair / face and took to one another so easily once the parents / coaches were out of the way. Watching our "coaches" be more concerned about their "green cups" as opposed to the score was classic. It was a great reminder of the fun the girls should be having to balance the work that constantly overshadows it.
I'm going to try and fetch some older content I posted on the history of Goats with some embarrassing pictures to boot.