What''''s wrong with the MOB Poll?
Regarding MOB techniques, I believe you are correct that the sails don''t have to be perfectly trimmed at all times while returning to the MOB, but just ignoring them is a recipe for disaster on may boats in many conditions.
Accidentally jibing a large main can damage the rig, not to mention hurting those left aboard. And since the sails provide the power, you need to have your boat''s heading relative to the wind and sail trim in coordination. You may need to add a little power when you need to make way toward the MOB and then luff the sails so you can glide to the proper stopping point.
In practicing aboard a 38 foot sloop with several other students, I witnessed quite a few early attempts where the boat sailed on by the MOB because the sail suddenly powered up when the helm was turned toward the victim. It wasn''t possible to luff the sails because the they weren''t trimmed properly for the course we were on.