How Might I Be Able To Keep My Foreskin Retracted Temporarily?

How might I be able to keep my foreskin retracted temporarily during intercourse to enhance sesitivity and hence
pleasure. Have tried elastoplast ideas off the internet and various other ideas involving bits of a bike inner tube, all
to no avail. My final idea is to get three genitally pierced rings through my foreskin, one on the bottom of the foreskin
and two on either side of it. These could then have three thin stainless steel chains that could be anchored to a fourth
pierced ring on my perineum or perhaps anchored to a butt plug. Any other ideas please?
Stephen