I am thinking of getting guide-ons. Pros and cons, please. Roller or bunk etc...<br /><br />I did a search and could not come up with any definitive answers.<br /><br />My boat is a 15' Starcraft, currently trailer has bunks and keel rollers. I have a somewhat difficult (but not horrible) time centering when loading. Also, with my tow vehicle (2001 Mazda Tribute V6 AWD) I cannot see the trailer at all unless I open the hatchback. Not a terrible thing, just annoying.