Have you experimented with stiffer ropes?
Here, I think --absent rope-in-hand-- that having the
tail emerge on penultimate tuck (towards eye, thus)
and then go around the returning eye leg should offer
a slightly broader (2 vs. 1 dia.) turn, helpful for rope
that resists (strongly!) making a 1dia. bend. (Or,
to put it another way, those 2 diameters will fill
the space a stiff rope is likely to otherwise leave.)
Hmmm, the collar turns might tighten more than
one will be happy about --YMMV per material & force
(and tendency to be grumpy).
Tying this is not quick/simple, but there are times
when this counts merely as an inconvenience,
with the sure security a redeeming feature.
--dl*
====