3-Gun competition shooter Rick Birdsall shows one way to cut time on moving. Check out about 0:12
As far as I know there is no rule against sliding under the barricade, but in USPSA/IPSC, this would not work.
https://www.youtube.com/watch?v=QcfuRo8pPeQ
From: Birdsall821 via The Firearm Blog
