"Happened to my child, who also did dance and was extremely flexible and strong. Also happened to others, they definitely kept an eye out for talent and potential in the rec classes. People were also occasionally spotted in the rec competitions.
We have several people in the national squad and an ex Olympian, so a decent club."
Same as me. Eldest was spotted at 5, and put into squad, youngest was spotted in preschool and went straight into development. Eldest was artistic and did her national grades. She's now a coach. Youngest does a different discipline but she's still in squad, hoping she'll make it to British Championships one day (not totally out of reach for her).
Of all the girls in my children's squad, all except 2 have been picked. That said once in a squad, there is a lot of movement from one club to another. My eldest did gym at two different clubs and now coaches at a third, completely different club. They also spot children fir their squad.
I also disagree that you need to be pushy, although maybe that depends on the level and type you're working at. I've never been pushy, and neither have most of the mums at my daughter's clubs. But.. my daughter was only at national grades. Perhaps if she had been at compulsory it might be different, but that all seemed too much like hard work for us! I know one of the mums whose daughter was British Champion several years running at my daughter's club. She is far from pushy! But not artistic, which is a different beast!
That said OP, I'd recommend emailing and asking them what they think. Over the 17 years and 3 clubs, my children have been involved in, I've found the coaches quite direct!
Finally, a six year old won't be tumbling yet. My daughter was doing round offs at 6, tuckbacks at 7, round off flicks at 8, straight backs at 9... She now coaches Acro, I just asked her and she says there's no tumbling in Acro gymnastics but look to see if there is a specific tumbling class near you. It's a much smaller discipline mind, so classes are few and far between.