Correct. Stay and play because hit and run is useless.
I stay and play in 3 stage rounds of up to 500 spins total. I expose a small portion of the bank roll for about 350-400 spins, then expose a bit more bankroll for about 100-180 spins, then expose the whole bankroll for about 20-40 spins.
If after the first 2 stages I have lost money then I do not proceed to stage 3 and expose the whole bankroll. I simply start again from stage 1.
Sometimes I will play only the first 2 stages for several or more sessions because I keep losing, but the moment my system is on a winning stretch and shows profit for the first 2 stages (about 450-480 spins) I will push on and play large for a relatively brief period to try and capitalize on the upward momentum.
Yes, sometimes I lose the whole bankroll in 20-40 spins too.
But this is all about creating an edge with a level selection (which is the best we can hope for) and making my bank work for me.