I know, I thought it was the best way when I first started. Problems I have...
1) Its heavy $$$ and cost to much to build or buy.
2) Takes to much time to secure the motor to the crate. Straps or bolted.
3) Shipper never secures the motor to the crate or packs it tight so the motor doesn't beat itself to death.
I have seen the motor beat its way out of the crate! Oh it wasn't pretty!
From my experience its the shipper that never packs the motor tight. I mean that motor should not move it what ever package it is in. You should be able to roll the box, container or cooler across the floor and never hear or feel the motor move inside the package.