I got into strange rules on a trip through upper Arkansas and Tennessee. I thought I was getting BS'd about last pocket eight ball when I lost a game to that. I looked around and everyone was indeed playing last pocket. Other times it was obvious that they were making up rules as they went playing a stranger. It was fun catching them with their own made up rules! Even their buddies had to laugh.
I often use a touch of running english. More sidespin than that is rare. I can use it and do sometimes on a wide open table but I have seen the very best get burned too many times using sidespin in traffic. Angles and speed, more commonly called speed and angles, is by far a better solution. We usually learn spin first and seem almost like going backwards to then learn speed and angles but I don't think it is harder to learn than spin, maybe easier. Angles without side spin tend to be much more honest.
A few years back it was common as dirt to see even the best using excessive side spin and going around the table when they didn't need to. That seems a little less common now.
Many people have said they didn't need to learn english after they learned speed and angles. A bit of an exaggeration and learning cue paths is needed with either practice but once the bare bones are in place I think speed and angles are easier to work with than spin. When I go around the table so the money ball is a tap in I prove I do know spin. Most of the game I show when not to use it though.
Most people follow a certain progression. First they are happy to just make a ball. Then they discover draw and every shot is a draw shot. Then they move on to spin and use it whenever possible and as extreme as possible. Then most move on to a more delicate game, only using extreme spin when really needed.
Hu