Trailer is 16’ long so I cut everything ~8’. We stack it in piles 4’-ish wide. Crush it as tight as the BMG will with the Gehl, then load it in the back, starting right or left. Next grab goes on opposite side. Next in center. Wash, rinse, repeat until just higher than the sides (4’). Then use the grapple to push as far forward as possible, and grab a log to finish shoving it forward. Repeat for back half. When I’m done, the trailer is packed. Drop big wood over the side for further compression and to eliminate small stuff blowing out.
Occasionally, when a long way off and needing to pack more on, after pushing forward, I’ll cut four 7’-8’ poles (standards), and climb up and work them down alongside the front stack, then drop the ramps and run the Gehl into the trailer and stack a few more grabs on top before packing the back half. Makes for some awesome looking loads!