Watch you tube videos. Explained clearly, and graphically.
And, if the STUPID laws require it, I'd "cross strap" it with 1" hf $3 straps, ..... and tie it down for real with quality 2" straps and axle straps, straight.
Doesnt say you can't use four straps on each end, does it?
Seriously, watch the vids You'll never cross strap again.