can second this Posted by: Peter-CA on Jan-02-13 1:25 AM (EST)
I have a RM Aquanaut HV and use it for trips. I am 220# and had it loaded for a planned 8 dayer (so likely 50+ pounds of gear) and it was rock solid. Probably handled and felt better than when I paddle it unloaded. On Valley 3 layer versus WS single layer - I don't think you'll feel a difference on the water, but the 3-layer may be less likely to oil can if you have it too tight strapped to the car.