Some designers who are paid a fortune to come up with "the best shape possible" have produced many cats over the years and still haven't even approached the potentual of those hulls. I am not sure if your "design" work has been accidental or by intent! but which ever, the finished resulting "shape" shows an enormous performance potentual, (from what I can see with the limitations of the photo's)
the only area (possibly an illusion from the angles of the photo's) that may be a slight drag inducer is the rate at which the bottom of the bow opens out to its bouancy so "bluntly". Although if the first 2 to 3 inches (in depth) of the entry is kept under water when driving it should make very little difference to its driving resistance (or lack there of).
Darryl