Pilot Lyons
Hmmm? Not leaning? not deploying flaps for fear of having to trim? One statement says the PA28 is more slippery then another dont deploy flaps which are an excellent form of drag.
All sounds a bit fly by numbers and clinical to me.
My advice get taught to lean properly and be confidenet in that process.
Learn to trim as an instinct and trim for any power or configuration change.
Use flap as required as long as you are within the limiting speeds for various stages.
There is no big deal in changing from a 152 to a PA28!
Pace