Hey guys so I got my "go-guy" (real name go-girl) I guess a few months ago now. Anyway I've been trying to get the hang of it, while wearing a glued on prosthetic, sparingly since I first got it. It's been going OK...
I took everyone's advice and started in the shower. Now, this is where it gets frustrating/weird; to me it seems that I was able to get it without any leaks in the shower within a few tries. Then, I tried once wearing clothes in front of the toilet while slightly drunk and was able to work it fine, no leaks. HOWEVER after that one time in front of the toilet I can't seem to get it back to no leaks. Even trying in the shower is causing a little bit (10-15%) to spill out the back/down my legs.

Personally, I think the problem lays in where I place the "go-guy" initially. The company says to make sure you have a tight seal, but it doesn't say where exactly that seal should be. It seems like I have a choice of a few inches on where to put it and still have a seal.
Hope you guys don't mind but I'm just going to ramble off a few questions and if you could help me out on any of them it would be more than appreciated, thanks!
1) Where EXACTLY should I place/lay the "go-guy"

? Where should the top of the funnel be? On my underside, right next to my natural dick? Further up on the pubic bone? How far back should the end of it reach; my front hole, my butt hole, even further?
2) Is there a certain way I should angle my hips when peeing for best results? Should I kind of stick them out? Should I keep them the same way that I do when I stand? Should I be bent over at all?
3) Should I bend my knees into a slight squat when peeing? I do that now, to kind of help myself relax enough to go.
4) Is there ANYTHING else I should know about the "go-guy" and how to use it?
5) Are there any videos anywhere of someone using the "go-guy"; even just where exactly to place it? Or even just an extremely detailed review?
6) This question is a little random but, when peeing how close do cis-guys stand to the toilet? I've noticed when trying with clothes on, my legs, jeans and underwear often brush up against the toilet, is that normal for all guys?
7) In case the problem isn't me and it's the "go-guy" are there any other STPs that you would recommend? Please keep in mind that the STP HAS to be able to be concealed inside my underwear, hopefully on the side waistband.
Thanks so much guys!!