^^^ agreed
I shortened a board and took the approx 40mm thick nose down to a normal thickness then re-glassed.
Customer very happy and says it works wonderfully.
Really you only need to worry about sharp changes in nose rocker after that fist say 20-30cm.
It all about blending lines, its possible. Rail reshape comes back further than rocker reshape.
That nose was 40mm ish, down to about 12mm and rounded off.