Flat bottom, lwl/Tc ratio?

Are there any major drawbacks from having a flat bottom (albeit slender lwl/beam of 8) at considerable draft please? By considerable, I mean a double ended vessel that displays a lwl/Tc of approximately 17. The Bwl/Tc would be 2 for minimum WSA and plenty of rocker. Sound confusing? Coinsider a long slender deepish draft Bolger to get a better picture. I like the idea in terms of construction but would like to know if there are major hydrodynamic no no's associated with this idea. Stability is fine as I'm hanging a large fin and bulb off her. If the corners should be rounded by how much please? Thanks for your time and trouble, Guillotine Racing.

 

I'd suggest that you make lists of all the advantages and disadvantages of a flat bottom on a boat such as the one you contemplate.

If I did that, the flat bottom would not make it past the first draft.

 

Flat bottom boats behave well only with low displacement. Even then, they pound quite a lot. Sailing sharpies when heeling, act as a vee hull. I don't see any advantages to a deep draft flat bottom boat.