Well you know I can't deal with how suspicious stuff may or may not look lol.
First you say, exiting at "-1 or more". Then you say you do not exit at RC=-4 at the second hand. If your sim is assuming you are "flooring" TC's, you would have left after that one round. If it's assuming you are truncating TC's, you would not leave.
Hopefully your indexes, if any, are also based on the same assumptions as your TC is.
This "playing from top of shoe and exiting at some point" is an area I don't much about.
That said, I don't know how Norm's stuff might deal with stuff like the "instantaneous cost" of finding another shoe (meaning another "off-thetop" shoe is immediately available in my mind) vs the cost of finding another "off-the-top" shoe and the cost of continuing to play at -counts in current shoe.. To me this only has a bearing on "hourly" win rate anyway.
Or whether it may even could assume, if you could sit out that second hand above for example, assume you'd still be allowed to re-enter the game because "back-counting" is allowed.
Frequencies of experiencing a minus RC, I'd guess, would have to change if one always exited at -1 and could never re-enter after that. Since, sometimes, otherwise, one might have a -1RC, and yet eventually recover to RC=0 or greater.
Not to mention how any of this may effect initial $unit or not depending on how long you may or may not choose to continue to play, if ever, at -1 or -2.
I've never cared that much about "hourly" stuff anyway. Although that is the best way to measure the value of your roll lol. I understand that. But, with my belts and suspenders, I'd just want to know "per round" stuff and keep track of rounds played anyway. Maybe kind of like The Wise One was saying.
I don't care if I'm "supposed" to play 27 rounds of every 100 seen. Maybe sometimes it's a full table, or a 1-other person table. Maybe I don't even "see" 100 rounds per hour. If I play 33 physical hands, I've played 33 rounds and I know what to expect from them and maybe it took me a half-hour or maybe 2 hours. My N0 is what it is, to me, expressed in physical rounds played, and that's all I care about.
Like, if, say, I could purely "back-count", only play hands at say +2TC or more, I wouldn't really care what my "hourly" win rate should be, assuming as it must some number of rounds "seen" per hour. All I'd care about is how many rounds I played and I wouldn't give a rat's ass of how many hours it took me - I'd measure results by physical rounds played, not by hours played.
Sorry I couldn't answer your basic question better.