I think a scissor lift with raise the bed higher, than a dual piston lift.
I think on My PJ Dump trailer it was 5 degrees higher with a scissor lift.
Then higher your bed goes, then gravity will make it easier for whatever you are carrying to come out. And then it makes it easier for your load not to get stuck.
2013 Ford F450 Super Duty Truck
2010 Exmark Lazer Z 60" deck
2012 ExMark 30" Riding Aerator
2011 John Deere Pro Gator 2020a
2011 Lawn Solution Dual Hyrdo Aerator 24"
2011 Echo Handheld (trimmers to power pruners)
2007 Big Tex 4ft metal high side 7' x 12' Trailer
2012 PJ 7' x 16' Dump Trailer
2014 Vintage 8.5' x 24' Enclosed Trailer
2012 Ecolawn Applicator model 200 Compost Spreader