George: if similar to the Trail-Rite's design when installing a keel bunk be sure that the spacing (up/down) from the top of the keel bunk to the top hull bunk is the same. you don't want the spacing to be taller (meaning the hull is taking more load), or shorter (the keel is taking more load). if the the spacing is really short the hull bunks will not even touch the hull and the boat will lean to one side on the trailer, or really tall the keel will not touch it's bunk. i hope these descriptors make sense. if you need some detail photos to confirm how to measure for sizing, or detail photos of the old Trail-Rite trailers, let me know. i have pictures of my old M15's trailer and can also show you how to measure a trailer using one i have here at the shop. I would really like to sail on your M15 ... i just wonder how different she sails with the non-standard rudder and the different standing rigging. :: Dave Scobie ________________________________ From: George Iemmolo <griemmolo2@gmail.com> Sent: Tuesday, July 30, 2013 5:40 PM Dave The trailer supplied by "Annapolis Launch & Dingy Co." the company that built the American Classic version of the Montgomery 15 is a Haul Rite with 3 rollers for keel guidance/support and bunks for the hull which appears similar to trailers I have seen in pictures on the MOG site. I understand that trailers being presently supplied have bunks for all areas of support. I am thinking of removing the rollers that need repair and putting in a keel bunk board. Any things I should be on the lookout for? George 'We Can Not Control the Wind But We Can Adjust our Sails' -----Original Message----- on Behalf Of W David Scobie Sent: Tuesday, July 30, 2013 2:56 PM George: is your trailer a Trail-Rite? I have no idea whom American Classics used as a trailer supplier. :: Dave Scobie ________________________________ From: George Iemmolo <griemmolo2@gmail.com> Sent: Tuesday, July 30, 2013 11:44 AM Has any one eliminated the rollers on the trailer for an M15 and converted to a bunk board? If so any words of wisdom would be appreciated. George 'We Can Not Control the Wind But We Can Adjust our Sails'