if your short a fat buddy and only have a skinny buddy or wife or kid for a helper - start the board in the pocket in the front - rest the end of the board ontop of the angle iron in the back its supposed to fit into. - find a couple of scrap 2x4 and a section of angle iron (2x2 works well) - clamp angle iron to rear of trailer (about an inch in) with 2x4 spacer between the top angle iron and the angle iron of the trailer (this should give you about a 1/4" clearance so your not clamping tight on the board your going to put in place). - take bottle jack or floor jack and jack up the middle of the board your working on. - youll watch the end of the board at the back get shorter. - when board gets short enough to fit under the rear angle of the trailer wedge down with crow bar (that 1/4 inch gap or so) - let jack down watch board go into place. TLDR: if you dont have a "fat buddy" a jack and clamp system can be used