Depending on your tolerance, 1/15th of a patch might not be a large enough dose. Maybe up it to 1/8 (although without knowing your opiate
tolerance it's impossible to really say), park it between gum and cheek (buccal absorption seems to work better than sublingual) and let it sit for a while, while trying not to salivate, because swallowing the saliva w/ fent will waste it, fent doesnt absorb through the gut that well. SwiYou will know whether it's working in 15-20 minutes, definitely sooner than an hour.
Don't smoke the non-gel patches, that's just gross and I doubt it would work that well. It's probably that swiYou didn't get past your tolerance, or something was off with your sublingual administration. Be really careful with upping your dose, though. Fent can easily become deadly; SWIM
has had some close calls with a whole 100 mcg/hr patch before.