A key lesson that no-one has mentioned is that flying is about procedures, just like surgery. If you fly IFR that goes without saying, but it applies equally to VFR flying. The more precisely you follow procedures the better.
Runway markings are there for a purpose as are circuit and approach patterns and you deviate from them at your peril. If you find that you have deviated then go-around is the appropriate reaction.
I can think of no circumstances where low and slow is a good idea in a spam can even on a short field approach the numbers and procedure are clearly laid out in the POH.