I currently use the old style culling system where its the the old clip style that you pierce the mouth of the bass with colored ropes attatched to it, I'm looking at getting a new system to be more fish friendly becasue I've heard the old style injures the bass. Any suggestions on wich system works well and wich system I should stay away from. Also I dont want to get a system that the clips can come off of the bass's mouth easily, I dont want that worry so any help is appreciated .

Not sure how much more damage you can do than sticking a fish with a barbed hook and horsing him to your boat.  I just use the thinnest stringer clips I can find and pierce the lower skin below the mouth.  Seems to work fine and havent lost a fish yet.

B