I would model the problem something like this.
L = max length on the skin, inches (maximum length, measured on the outside surface of the hull). Or just measure LOA and scale up by a factor of 20% or so.
G = max girth, inches. Alternatively, model the cross-section of the hull as a demi-circle: the circumference of a circle is 2 * PI * R or PI * D, where D is the diameter and R is is the radius (D/2), using the maximum beam as the diameter. Note that the demi-circle approach will get more and more off-kilter as the hullform deviates from a semicircle (e.g., skimming dish or plank-on-edge).
T = strip thickness, inches
W = overall strip width, inches (including the bead if bead+cove)
K = saw kerf, inches
WF = waste factor, (K * T) / T ... this assumes you're ripping strips off the edge of the board.
Compute net board feet as
NBF = (L * G * T) / 144
Compute gross board feet, accounting for saw kerf, as
GBF = WF * NBF
Compute the number of strips required as
N = (L * G) / T
Don't forget to scale these numbers up by a factor of 20%-25% to allow for Donald Rumsfeld's "unknown unknowns"
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