In perfect conditions, I can manage 3 pops in an hour's meeting and 2 in half an hour. But it all depends, if I'm well rested, well hydrated, and always with the help of the blue pill. Sometimes I can't, I may have a good hard on and will be pumping away like there's no tomorrow but it just won't happen. What helps a lot, in my case, is the girl's attitude and general service and how sexy I find her. A woman's attitude always helps or hinders, for example sometimes I could be shagging a stunner but because of her bad attitude I just wouldn't be able to cum and I would end up really frustrated. On the other hand, if she is really sexy and willing I do manage it. Sometimes even silly things turn me on and help me cum again, like the time I went to see Alice Parks, even though I reviewed it a negative, her moans when I was shagging her somehow turned me on. It was just the way she did it, can't explain why that turned me on and I popped twice in half an hour.
I don't know how long I'll be able to do this, I'm in my late 40s, but I noticed that if I do manage a third pop in an hour I end up completely shattered afterwards. Not like when I was younger, of course. I'm sure it has to do with my level of fitness too. Being office bound I don't exercise much but I do go to the gym; not as often as I should though and I try to eat balanced healthy meals. I don't smoke and don't drink (much), I'm a bit overweight but not much, so I think being healthy and fit helps a lot.
I think punting has had a bad influence on my fitness levels though. When I was in my 30s, early 40s I used to be much fitter and slimmer mainly because my main "hobby" at the time was hunting for lovers and going swinging. As such being reasonably presentable always helped. Now that I'm punting a lot more obviously what I look like is no longer important but I'm always conscious that I shouldn't "let myself go" a bit too much even if just to keep myself fit and healthy.