Question
We have two similar-sized maple trees, and each has a main trunk that then splits into two thick trunks at about 4 ft off the ground.  The two trunks that split are about 10" circumfrence each and the main trunk is about 17" circumfrence (measured at one foot from the ground).  I just pruned some side branches that were too low and now the trees looks ridiculous with this V-shaped trunk. I also just read that a V is a weak spot.  Should I try to space the trunk crotch?  I think it is too late to try to remove one side of the V to get a main leader. I would estimate that the heights of the trees are at least 20'.

Answer
I would leave them be. Some trees because of their genetic makeup are forked and they live many many years with no problem of splitting. These are large enough to live to maturity with the fork with no problem. If you cut one the tree will more than likely be lopsided it entire life and the fungi could enter the wound where you cut so I would leave it a lone and if by chance it splits you any needed cutting then.