Shaun,you said four fingers high.Ive got big hands and four fingers measures less than four inches.That is a load of bull shit off some one who doesnt have a clue what they are talking about.
You also mensioned settins on or around seats,total rubbish.
They arent designed to set around holes(you only get knocked snares) but are set on the runs leading from there holes!
This kind of wrong advise to people who want to learn is wrong because people will go out and try what you have told them and get totaly disheartened.