Originally Posted by OTB
Cam straps are designed to and have, for me, secured everythigng in by raft when it was upside down in a class 5 rapid. Rokstraps wouldn't stand a chance. Any strap that is not a full tension will stretch under extreme load, like crashing, and loosen the load. Elastic doesn't cut it offroad. So, I stick with cam straps.
How much does your load weigh on your raft? I've carried over 100 pounds with two straps on my bike, pictures shown earlier.