Maule Driver wrote:

Flying that speed accurately is valuable but perhaps not as valuable as
understanding the other major variable in doing an engine out glide to a
spot on the ground.

Several experts (people like Barry Schiff) claim that the best speed to use is
actually a speed which will keep you in the air longest. That gives you the most
time to attempt a restart and use the radio. The only time you should use best
glide is when you actually need to in order to reach a suitable spot to land.

George Patterson
The desire for safety stands against every great and noble enterprise.