Chris OCallaghan wrote:
...
I have always entered spins through a misapplication of the controls.
Various models differ in the amount of misuse they'll tolerate. For
example, a Lark IS-28 will spin if you stick your hand out the clear
view in a left turning stall (only a slight exageration). The Grob 103
has only a very small spin entry window -- to the point that most
pilots don't have the patience to find it and thus pronounce it
unspinnable. And yet, once in the spin, the 103 is perhaps the most
interesting. (The SGS 1-26E is, in my opinion, the ultimate spin
training platform. Easy entry (big ailerons), easy recovery (just let
go), and a very stable spinning motion that lets you get used to
attitude and rotation rate. Only disadvantage is that you'll be
teaching yourself. Start high.)
...

During my recent instructor course (last September) I had some spin
training in a PW6 (no other glider allowed to spin was available).
I found it very easy to enter as well as to recover the spin. After
that the (meta) instructor said "I guess that even if you release
all controls, it will recover", so we tried it and it recovered, then
I said "But we had the trim set for flight at max L/D, I guess that
with full aft trim it does not self recover", we tried it and it
did not self recover.