Rhino Boat Hull Thickness & Tweaks -- 2

I already have a complete boat model in Rhino 7; the geometry is all single-surface and still paper-thin. I now need two things done to that file. First, give every relevant surface realistic thickness with Rhino’s OffsetSrf workflow... (Budget: ₹600 - ₹1500 INR, Jobs: 3D Animation, 3D CAD, 3D Design, 3D Modelling, 3D Printing, 3D Rendering, Rhino 3D, Solidworks)