I don’t have a solution and I doubt a perfect one exists but did want to add in info to make sure people are not under the assumption that people on HRT have done support of significant advantage.

For me to have an informed solution, I would have to know how long it takes for muscle to come back once HRT is stopped, what the side effects are of starting and stopping HRT repeatedly, and probably a host of other questions that I do not have the answer to. Trans people are not quick to simply stop taking their hormones and hormone blockers. Considering almost all of them went through years of struggle to transition, stopping them destroys years of progress and some of that can be irreversible. I do recognize that money can convince some people although there is not a ton of money in women’s sports.

The Olympic Committee used to test testosterone levels but had to shelve that because, while rare, cis women occasionally have higher testosterone than the threshold that was set. So they went back to inspecting genitals for a while. They could go back to testosterone level testing for trans women but that is a little discriminatory since it targets them. I don’t have a perfect solution and I’m not sure one exists that isn’t going to piss at least one group off.