Full of Idea's

[TX BORN]

Hey im looking into building my own dog box for the back of the truck bed ideas would be great... Im going for two hole on bottom for bay dogs (more than one to hole) seperator in middle hingable for one big box, and three on top for bulldogs (one to hole). Do yall think I should put pannel on the back and sides to block wind when winter comes, or just make it all pannel (of course there will be a roof)? or mabey removable sides for both seasons... all pics would be great for ideas... Thanks!