Alright, so I gave it another shot today....it seems that I've probably just been expecting too much of it.
Normal day using she-p: glue it on at 5am, board the boat at 6:30am, do two to four dives (with climbing ladders and walking around and whatever else....all in relatively hot weather but thick undergarments = sweaty), peel my drysuit off to reveal the fact that I've peed on myself (if I didn't notice it before) at 4pm.
Today's use: glue it on at 12pm, quick shore dive at 1pm, peel drysuit off to reveal the fact that I have NOT peed on myself at 2pm!!!
So, I *think* that if I am doing a dive (maybe two) that I might be safe without using any extra protection....but if it's going to be a long day (especially with big ladders and scooter diving), I think I'm going to add some depends as well.
FWIW, I'm pretty positive that it's not a matter of gluing it on improperly, but with having it stay in place after hours and hours of use/abuse.
Today's revelation was bittersweet....I've been using the thing correctly, but it will probably never perform the way I desperately want for it to. I don't think reapplying mid-day will work for me as I get really seasick and will do damn near anything to not go into an enclosed space....so some way to absorb the leaks will probably be my best bet
Thanks to all who have offered suggestions! I really do appreciate it