Sean - Yes, we can hold competitions over the summer because it is considered "Open Season/Open Facility" by the SCHSL. Up to 10 days can be used for school against school competition, however if you go to a Team Camp, those days at camp count against your competition days for school vs. school activity. In short, if you were in a Team Camp for five days, you would still have five days to compete against other schools. In a 6v6/7v7 summer league, you could play two games each evening and still manage 10 matches in addition to going to a team camp. That's what I'm planning to do this summer.
