Gifyu didn't work for you? If I want to post something on the forums, I usually use it. As far as I know, you don't need to make an account and you can't actually get banned.
If that doesn't work, you can try using Telegram or Insta to post your pics? Although I have no idea if shf can understand their links.
I remember a few years ago, for a high school friend's birthday party, I decided to stop dressing homeless (i.e. old baggy T-shirt and sweats) for once. And I wore shorts and thigh highs. Friend's younger brother was giving me smiles, but nothing crazy. Few weeks after, friend said she asked her brother, "Do you remember [pangmida]?" He said, "Of course. I could never forget those thighs."