Hi Chrissy - Yeah I used gaffs before my orchie I found them on a crossdressing site that used to be called 'suddenly fem' I think they changed the name cuz I still get marketing emails although I haven't bought anything in a few years.
The new name might be "en femme"? I don't really pay attention to the emails.
Anyway.... yeah they work pretty well but have realistic expectations. That area is not going to be 'exactly' the same as if you had nothing there. But it helps.
There are also videos on you tube about 'tucking'. Also sort of helpful. I remember about 15 years ago getting a little carried away with duct tape. YIKES. Don't injure yourself. If you want to get rid of it I recommend a surgeon.

But in the mean time - yeah gaffs can help. Just don't damage anything.
I don't use gaffs anymore. With my testicles gone the bulge is smaller and as someone pointed out to me -
'if someone is looking down there it is their problem"