I've hosted probably more times than I care to remember open door/anon fucks like this. It's probably my own fault why it's usually more 'miss' than 'hit' as I have a habit of getting horny to get fucked anonymously and arranging it their and then, but occasionally it can be good. If I leave an advert on bbrt for a week I might get 20 guys saying they'll come but in reality at most 4-5 will actually show - but then that is more enough to satisfy me.
I've hosted three times since moving to Manchester in January, the first time only 1 guy showed (and quite late) but the other occasions I had two show at both. More often than not I post a quick ad on bbrt but I also send a block text to any men I know who maybe nearby and up for it. Anything from 5 to 30, depending on how adventurous i feel lol. Sex like this is a bit like the law of diminishing returns! No matter how many men I ask, I'll rarely get more than 7-8 show, even if I leave my door open all night. However after that much sex, my ass is usually a bit sore to continue and I'll probably have jerked off at some point.
I tend to wait on my bed in nothing but a jock, but I like to ask the top how he'd like to find me. Invariably it's on my front, ass up, but sometimes I get odd requests. Although to be truly anonymous I should wear a blindfold, for security reasons I don't and I would say that most guys don't seem to mind if I see them or not.
Nothing really beats the excitement and tension beforehand, knowing someone is on his way to come and fuck me. Really gets me going. It's only really a guy's smell that might put me off, I don't care how big, fat, ugly you are - I just want your cock, and I want your load up inside me.
Anon/walk in sex is so pure. Some guys might cum really quick, but I'm getting what I want plus the satisfaction of knowing I'm making someone happy, albeit for a few moments. It can be very intense, deeply erotic and also clinical. It can, and usually is, very animalistic - it's just sex, two men mutually benefitting one another. And then it's done. On to the next!