I cartop my Atak 120's. yes, 2. Easily done by myself with the seat removed, a little trickier with the seat in. The center dry hatch on the Atak 120 is almost inaccessible when on the water because of the seat being on top of it depending on how the kayak is trimmed. The rear hatch is a pretty far reach from the seat also. The Atak 120 is pre rigged for a Wildy rudder which is awesome, but if you're not planning on installing one, I would suggest dabbing silicone in the foot control tubes. I would suggest dabbing silicone in every factory mounting hole to be safe. Your hull will not capsize, but your dry hatches will no longer be dry hatches. Plenty of track, Flexpod, Airpro Max seat, accessories, the Atak 120 is an awesome boat. I'm sure the Big Rig is amazing as well. I would not dismiss the Radar From Wilderness Systems in either size before you decide.