If you induced male flowers on a named variety then you could do some home-breeding.
A friend of mine works in the hemp (for grain rather than fibre) industry and they have played around with silver thiosulfate in the past to induce male flowering on female plants. This will not make 'true' male flowers, ie with x and y chromosomes, but the pollen will still pollinate the females. All the seeds are female as the induced male flowers have only xx chromosomes. They do this to get higher grain yields, more females equals more grain. PLus one male will pollinate 50 females, far lower ratio than the 50/50 mix that nature gives them.
STS may or may not work on hops, but they are closely related so its probably worth giving it a shot.
Sts will really impair a plants growth, you're really only doing it to make it produce pollen, you won't be getting hops from it that season either.
So to do it
Take a vegetative cutting (as opposed to rhizome cutting) of your favourite variety while its in its growth phase. Just stick it in some water for a week and then plant in some potting mix, hops root really easily, i have done this multiple times. Keep this plant in a pot as it will eventually be your male and you want to keep it away from all your female hops.
When its big and strong and about to produce flowers. Give it a spray with some STS. It will get very sickly looking but when it gets better it will hopefully put out some male flowers. Collect some of the pollen and put it on flowers of the variety you want to cross it with.
I have never done this with hops (or hemp for that matter). But i know it works with hemp. An interesting thing that i want to know is whether the rhizome left from the plant that you treated will be male or female when it pops its head up next season.
Also, doing this with triploid varieites may or may not work. IIRC i think they are bred for seedless-ness so they might not set seed/viable seed. Kinda like seedless watermelons.
Give it a go, the delights of centarillo and cascimcoe await.