You could look into some all-summer residential camps that are not solely gymnastics but offer gym programs. You likely would not be working with the experienced coaches they have at IGC, Woodward, and the like, but would still be coaching in the states and enjoying a camp experience with food/lodging provided as well as a pay check.
I know Bryn Mawr (
Lake Bryn Mawr Camp) has a pretty good gym program, they even do a few "meet" type things with close by camps. I interviewed there a few summers ago and the gym director, at least at the time, seemed like a really good guy. I ultimately didn't get the job because I wasn't out-going enough, so I can't give you any more info than that. So keep in mind that these types of camps will be looking at more than your coaching credentials and experience, but also at your ability to be a good all-around camp counselor. Not sure if you can coach without serving in some type of counselor capacity.
There are lots of other similar camps if you look for them, I haven't been in the market for that type of work in the past few years so I've lost track of which ones had good gym programs and which were more recreationally based, so you need to do your research. Here is just a general page of links if you're interested in that type of thing:
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You could also look into Flip Fest in Tennessee. They offer opportunities for people who just want to coach and not serve as a counselor. You coach during the day and have off time when the kids are at their activities and also in the evenings when the kids are in bed and under the care of the counselors. Lots of college and elite coaches come through so there are great opportunities to watch some exceptional coaches in action, similar to IGC/Woodward, but a slightly smaller scale camp.
I worked as a camp counselor this past summer (not at a gymnastics camp) and absolutely loved the experience, so I hope you find a great fit!