In my area is easy. Im bottom and submissive. I do recommend having rabies vaccine but I never have problem with ticks or fleas so far.
I get from friend female dog pee on wee pad. Especially if the girl dog is in heat. Then I just use like a wipe pad and rub on my ass and on my pants.
There are enough dogs in my area then I just go for a walk. The scent will pick them up easy. Sometimes dogs is aggressive so I carry small pepper spray can, but most times they just a little nervous at first. Once they get close and start to sniff they get excited and want to mount.
My area is pretty rural so is easy to just go behind some brush and pull my pants down. Most of the dogs here are already trying to hump me while I am still going into the brush. By the time my knees are on the ground the dog has found its target.