I recently finished installing two 140 watt panels on my 10' CO Alskan. Thought I'd share the install. I didn't want to use adhesive only on the roof and I didn't like the idea of bolting completely thru the roof either. I called 3M and asked about the VHB adhesive. They would not tell me the adhesive alone was enough to hold the panels to the roof even though it's been done for years and I have not heard of a failure yet. 3M suggested adhesive and mechanical fasteners. I guess that's a CYA statement for liability. What I ended up doing was using the boat rack as supports for two 2x4's that I bolted the panels to. Turns out that lined up directly with the spot Bryan at AKC said to bring the wires thru so I ran the wires down the side and brought them in right below the cabinet bottom in that channel and ran the wires over to the "umbilical cord that has all the other wires running down to the battery. I took several pics so hopefully I can get them attached. I've had the 12v fridge running for a week or more with sunny and cloudy days and so far the Trimetric has not gone below 96% full. It will be interesting to see how it does in low winter sun.
2010 AKC 10' CO
2013 GMC 3500HD 6.0L