I stumbled upon this product today (NSFW), wondering if it might work well for staying pulled back.
https://www.koalaswim.com/Tango-CumPrecum-Dam-and-Head-Enlarger_p_824.html (https://www.koalaswim.com/Tango-CumPrecum-Dam-and-Head-Enlarger_p_824.html)
It looks like it could be fun to try!
Seems it would protect the head and be like having your foreskin forward, defeats the purpose really.