dynamite ... kidding
one thing that you might already know and be doing but just in case you don't know - attach the chain, rope, or strap up high. That gives more leverage so you pull it out at an angle. Many people will put the strap down close to ground - that means they are pulling straight against the ground. Hard to explain, hope makes sense.
Resist the urge to jerk snap it - that always breaks something - either the strap, or your truck - flying rope or chain can damage your T4R, or hurt a bystander.