Reading this post makes me miss cruising. i remember some very subtle cues that would result in fucking lol. There was this park in VA with a wide and long pedestrian bridge over a river, was a popular cruising place. i used to go at dusk and dark and stand halfway down the bridge and lean on the rail as though looking out at the river. If i saw a lone guy stepping on the bridge, sending cues, maybe looking, i'd hike my shorts down just a little bit, enough to show some ass crack, butt not super obvious (i.e., the passer by would have to really be looking to notice). i can't count the number of times a guy would stop (and i guess look more intently), i was always looking away from Him, my back to Him. If i felt interest from Him, sometimes i'd lower my shorts just a tiny bit more, to encourage Him that He was seeing what He thought He was seeing. Very often the guy would come up behind me, pull my shorts down the rest way and breed me right there. It was dusk or getting dark and you couldn't really tell what way going on on the middle of the bridge from either end, but you could see if someone was coming and make everything 'normal.'
i've had service guys come to my house on several occasions, but never made any overt overtures, but have sent out subtle cues and have enough experience to know that if the guy is interested, He'll notice because He is "interested" too. Something like leaving a gay dvd in plain view, or i've left my douche in plain view on a counter, stuff like that. Mostly i just signal who i am, but i don't come on to a guy, just sort of try to send signals and if He responds, i ramp them up to encourage Him that He is reading me right. It's really HOT when sex develops from unspoken cues.