Yeah.. long buildup = lack of leg support as you keep going for a good 10+ roper
I don't know whether you're doing this out of interest or to try be a new Peter North and impress the ladies.
If it's the latter, I'm not convinced it will have the desired effect.. unless you find a rare girl who absolutely loves the taste of it, although I can't imagine such a person exists who loves it so much they want you to produce more, pornstars exempt.
Technique wise, then if you have a gf, I found(to my shock and awe) when I was younger and turned on easily/constantly, getting with my girlfriend at the time for hours on end created a unfathomable load size.. buckets were needed
.
I'm talking 4-5 hours of kissing and grinding, though, as she gave nothing else up
Basically; Blue Balls = massive load.
However I'd shy away of this technique due to the longing and painful sensation in the testicles..
Perhaps just a long session would work.
I'm not into the 2-3hours realm though unfortunately
