Nathan Young wrote:

With the throttle at idle, and plane trimmed for best glide, what is
your plane's descent rate (in fpm)?

note that: i) the best glide *speed* as indicated in your POH is
given at gross weight; i.e., sticking to this *speed* all alone
with less than full tanks, etc., i.e., lighter, will not work
as well as advertised; and ii) best glide speed does NOT give you
minimum sink.

--Sylvain