Uncircumcised man having sex, foreskin often automatically retracts upon erection.  If I put on a condom, do I have to pull back the foreskin before putting on the foreskin?  Usually, the foreskin is restricted in its movement when one pulls back the foreskin before putting on a condom.  However, would I get more natural glide to have more sexual stimulation if I DO NOT pull back the foreskin first?

I would also love to try doing it, having sexual intercourse, unprotected, without a condom so that the foreskin function is maximized during sex.