Foam pickup truck cap

Since everyone seems to say the second one is easier to build than the first - I am considering building a simpler project before I go too far down the madness that you have started here.
I'd like to build a cap or cover for my F150 that could be used as a single person camper or a separate galley if in the future I do get a camper in the works.
I am trying to decide if I should go with more of a cap or camper design. I would like to keep the top close to the level of the cab of the truck rather than going tall like most campers. I would love for this to be able to support a canoe on top.
So the question I currently have is: what would be the benefit of building an entire box that would go all the way from the floor of the truck bed versus just building a truck cap that would rest only on the rails of the bed.
The camper version would be fully insulated and more weather tight, but given my North Carolina location, that's probably not an issue.
Does anyone have any thoughts on the strength of roof racks / canoe racks / ladder racks in a Foamy?
I'd like to build something that would be useful and give me some practice in the Foamy techniques without taking forever or breaking the bank.
WoodSmith
I'd like to build a cap or cover for my F150 that could be used as a single person camper or a separate galley if in the future I do get a camper in the works.
I am trying to decide if I should go with more of a cap or camper design. I would like to keep the top close to the level of the cab of the truck rather than going tall like most campers. I would love for this to be able to support a canoe on top.
So the question I currently have is: what would be the benefit of building an entire box that would go all the way from the floor of the truck bed versus just building a truck cap that would rest only on the rails of the bed.
The camper version would be fully insulated and more weather tight, but given my North Carolina location, that's probably not an issue.
Does anyone have any thoughts on the strength of roof racks / canoe racks / ladder racks in a Foamy?
I'd like to build something that would be useful and give me some practice in the Foamy techniques without taking forever or breaking the bank.
WoodSmith