Homemade Roof Rack-

Personally I am not handy and plunked down the cash for a Thule box and bars.

Haha. maybe they didn't noticed?    Did you picked up the board?  

I've welded a frame before to place in my truck bed for holstering large tools, tool boxes, bicycles, and possibly snowboards if I were inclined to. It only works in the truck because the bed can contain it securely. Based on my experience with making a rig, I strongly recommend that you do not make your own rig for roof mounting. It will be incredibly difficult to fabricate a roof rack assembly, with precision, that will fit securely, remain lightweight as to not crush the roof, and be modular and easy to use. Time and cost of gathering the parts and materials, alone, makes it a pointless endeavour, its illegality altogether notwithstanding if not professionally fabricated nor safe.

The best you can do is fabricate a hitch-mounted out of basic mild steel. Use a TIG or an arc welder to weld it. If MIG welding is all you have, do not use flux core wire; use a copper filler metal and paint the joints for weatherproofing. But, again, reliability and the cost of materials make it a lost cause unless a custom-shaped assembly is absolutely required for your vehicle.