Sag in bottom of 34 raider
 

Please help. Is this normal or do I have a problem? There is what appears to be a curve in hull primarily from middle lift strake down, that goes flat where bottom lift strake stops.... Is this in design or ??? What bothers me is it stops where trailer bunk starts. Was this on purpose or??? I have pics but don't see how to attach them. This curve is a length of boat curve, I was using the lift strakes as reference for where it is. There is no cracking or spidering in gel coat. It looks like its in the design.

Sean