PL of PLs: takes cue from SM, mainly directs the leadership core of the troop. E.g., he will fill out a duty roster with patrol names, put it someplace central, make sure PLs get it done. Gets on them pretty quickly when something isn't happening as expected.

Mini SM: gets to know each of the boys. Works with them as individuals. E.g., he will fill out a duty roster, and announce it to the entire troop at morning flag. Expects boys to work as a collective. Sees patrols as merely convenient groupings.

Mini Advisor: trains the PLs but otherwise hands off. E.g., he'll hold a leadership cracker barrel, put a blank duty roster on the table and ask the PLs to sort out who would do what when. He might help the PL with a "tough case", but otherwise will make some suggestions on how to handle things and leave it up to the Patrol to figure out the best course.

Those are the three I can think of. Just thought it would be neat to compare notes. What makes yours one way or the other. Is age, character, troop size, or troop culture your driving factor? If a boy is very much one type, how much effort do you put into helping him change?