Radiator-Replace or repair

Found a small pinhole leak on the right side radiator bottom, right at the welded seam. Question is to repair or replace. I always lean toward replacement, but the radiators are freakin expensive. On the Rally Car I would just have it repaired as long as i could maintain proper cooling (and we repaired the radiators ALOT!). I just don't want to take a chance on "being that guy", especially since I am new to this and I do not want to take a chance on leaving ANY fluids on a racing surface.



Any help or thoughts for a new guy are appreciated (again! :) )

Kelton