Best practices for semen extraction or sample collection?

A stainless steel wand with a ball on the end. Inserted and rubbed back and forth over the prostate while in the knee chest position. Done slowly and with patience, the prostate can be entirely drained without touch the penis. With proper technique multiple ejaculations can occur without orgasm. Patience and time are key. I was once placed comfortably over a wedge pillow and milked for a little over an hour. I began to have dry rjaculation with no orgasm.

Be aware that this can be almost maddening because you constantly feel on the brink of orgasm. If I behaved, I was allowed to recover for awhile and the treated to the most incredible hand job.