I wasn't recommending running anything at WOT. Merely noting that doing
so produced twice the speed of the 1400 rpm operation while burning 10
times the fuel.

BTW, 2400 RPM provides an extra 4.3 kt above the 1400 RPM operation. We
made 12.5 kt at that setting. Those 4 knots are also pretty expensive;
as the approximately 50% increase in speed results from close to 5
times the fuel consumption.

1400 RPM, 8.2 kt, 2.4 gph

2400 RPM. 12.5 kt, 12.2 gph

A lot of the manufacturers recommend cruising their latest engines at
200 below WOT, which is significantly faster than the old rule of thumb
at 80%