My number one rule be it chains or straps is securing the hook so it cannot totally come free should the device slack.
Always route the fastener through the pocket or rub rail if need be and come back up and along side of the pocket ending with the hook hanging on the top of the pocket. Make sense? (The rub rail can be used but should not be considered to be as strong as a stake pocket. It's okay for say adding an extra strap for something lighter.)
Flat "J" style hooks or chain hooks make this easy. Others like the bent "J" hooks not so much.
When you haul bulk items, load them tight to each other to minimize shifting. When I bring home a load of hay for my horses, I like to use axle straps through the stake pockets with twisted safety hook style straps. I place the axle straps through the pockets before loading because sometimes the pockets get blocked depending on the bale size and how I end up stacking it.
My axle straps have nylon sleeves to negate chafing or cutting from sharp edges. You can buy various types of sleeves for your needs. When I buy something packed with heavy cardboard edge protectors, I save them to use on hauling anything that I think might chafe my straps.
When I secure a vehicle be it a lawn mower or a car, I use an "X" pattern with four straps or chains going from the right side of the trailer to the left side of the vehicle and vice versa and away from the vehicle both front and back.
You can see tie down examples on the federal website for commercial applications. I would imagine that there is plenty on say U-tube,etc.
When you are shopping for your straps, check out the websites that deal with such items. You can spec out your end fasteners, webbing width, length, colors, you name it.
