Nial,
'HEAVY PILOTS GO TO THE CHECKLIST THERE IS JUST TO MANY ITEMS TO COVER" doesnt justify your local flying school having the moonlaunch checklist for a C152.The aircraft that i fly is a widebody and we have one before takeoff checklist item that being "flaps".
I am staggerd by the gimmicky items that your local four gold bar instructor introduces to such a simple aircraft because it sounds proffessional.If you are a really proffesional operator stick to the aircraft manufacturers manual and you will save yourself(and hopefully your barristers time if you ever needed it) a lot of heartache.
Question everything that your local flying school teach you and see if it is just'' folk law".Conduct your operations in accordance with the AFM wholey and soley. That in my humble opinion is the sign of a true proffesional aviator.