What duyetanh said.
From what i gather your girls are atypical. Gyms may well judge on first impressions and make assumptions on their ability based on body type.
We struggled when we moved. I couldn't even get dd2 in for a trial at many gyms. At first glance she is not a gymnast with potential, all bambi legs and average flexibility. Her old coach saw something though and she was a very successful competitor, not something you always saw in training, and certainly not after one trial session- it's taken her new gym 6 months to realise how she manged to score so highly and win competitions.
If i thought she'd stick with wag i'd have certainly taken up her old coach's offer and used it to get her in a successful gym.
Funnily enough she did a holiday course at a high level tramp club, won a competition by miles, and has been offered a squad place, so it looks like she's switching to tramp anyway.