The Excels have 2, Compulsory 1, Boys . 2 The owner is HC and coaches preschool assists with Excel and Compulsory and coaches the Optionals when she isn't coaching all that. She is spread too thin. Floor and beam I think are covered by her. Although she physically unable to spot any event.One of the boys coaches wants to work tumbling with her but she refused because of what happened with the other boy coach on vault.One if the moms is a former gymnast who used to coach. She has been listening and observing. She said the instructions are just plain wrong. DD came home yesterday miffed that the boys coaches asked her how she should be spotted on a bar skill.
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This still does not sound like a "boys' coach" issue. (full disclosure, I have a boy gymnast, and our coaches frequently help with the girls since their coach just quit. The girls love them. We have had many leave boys to only coach girls and be very successful. Even they say there is no difference in the instructions, and one of them has been coaching boys for 15 years. So, there is more going on here than boy coaches causing issues. It sounds like coaches there do not have good training in general)
Also, unfamiliar coaches should always ask how someone wants to be spotted. My son has had clinicians and high level coaches ask him that. That is perfectly normal, especially for an older gymnast. In addition, many coaches will give instructions differently, does not make them wrong. My son has had 2 coaches tell him how to do a skill 2 different ways. HE tried both and stuck with the one that worked for him. A girl's vault coach gave him a correction one time that was completely different from what his coach had said, and he nailed the vault. Sometimes it is just the way they say things.
I am sorry your daughter got injured, but a stress fracture does not happen on one vault. There had to be some overuse injury to her hand before that vault.
It sounds like you like your gym and your daughter does too. But if you truly think it is a safety issue, and your daughter knows this, it is not a good place for her. If those coaches are well trained (any coaches, does not matter girl/boy) then they can safely coach a gymnast, if the gymnast trusts them. Otherwise, you do need to look at your options.