I've been pumping combined with jelqs for months now, with limited success. I tried Supra's Slammers for 1/2 hour (really hard to control the edging!) then pumped for another 15 minutes at 6in hg. I actually gained an extra inch, in the tube! Could only get 3/8", after an hour before ,and no fluid build up.
I stayed engorged and pumped, for the rest of the day and had the best woody ever this morning. Wifey is REALLY happy now!
Supra rules!