I smoke once or twice a week...usually by myself since all my friends are alkies...w/ less than half a gram of decent bud, I get insanely ripped for up to 45 mins...nicely stoned for an hour...and a mellow relaxation that sends me off to sleep. Really depends on mood and setting...my flat roomie hates me smokin weed, so when I do, i usually get all paranoid and ruin the high. If he's there when I come back, I head into the shower (Why? he asks...same answer...just had sex with the g/f when meanwhile i was out toking), turn on the radio, and pretend im in a rainforest. Helps the buzz.
Like eveything, moderation helps you stay high. I was addicted to opoids to where 40-50mg hydrocodone did jack shit...if I cut back for a few week, 20 mg flattens my ass. It's the same with weed, and any drug really. You just get to know what to expect, spend ur high seeking it, and by the time you realize an hours gone, so is the high. So moderate, and you'll be able to drag a nice hour out of a nice bowl.