If you cannot do 2 pops, the half hour is probably your best bet. Keep the shower fun-tivities to a minimum so you maximize time in the room. I am one pop.
On this site most people claim to have 2 pops, as well as giving the provider orgasms too.
Research says....Nearly 10 percent of 20-somethings are multi-orgasmic, but less than 7 percent of guys over 30 have multiples.