On sleepers being treated as "hot"
While sleepers as single numbers may be good to be avoided as a general rule (i.e. bias, AP), numerical groups containing what would be defined as cold/sleeper numbers can and do hit beyond their expectation (i.e. become hot numerical groups).
When you are monitoring such groups to bet you can extrapolate the "hotness" to include cold numbers inside the group, thus treating sleeper numbers as hot by extension.
You are not really betting sleepers per se, but events within your framework of reference having their own timelines
The game is supposed to be only 1-spin long with no memory, hence "sleeper" "warm" and "hot" states can easily be said to be relative (or even flat outright nonexistent!).
I see it's all about their current state within your very own framework of reference. There's no difference when betting non AP.
What difference does it make for a dozen or a column being hot when it contains sleepers, you do bet the location as a whole.
We can actually use sleeper numbers in such a light, under this frame. Why? Because we're not betting on numbers; we're betting on events...