Measure the distance between the two longest bunks on your trailer and match up to that. Likewise I measure from the long bunks down to the protecting cross bar underneath the prop on the trailer and match that for bunk height off the frame, mine was something like 15". I know quite a few guy who go less on the height, just depends if you can/will be driving your boat thru the lift or passed the frame support on accident.
Last edited by BT_48170; 03-09-2017 at 02:01 PM.
2011 Mobius LSV
2005 Mobius LS (sold)