Yes Donal,

I believe you are but for sure there are enough strings to pull on a Stb
Spinn.

However, I like to set the Spinn up behind the main (Shadow) then pull
it out into the trim position. You are correct about the pole 90 Deg to
the wind. On a downwind run you will be OK. BUT remember the question
was about over trimming the Main when setting on a Reach. If the Main is
blanketing any part of the Spinn the Sheet and Clew will be the effected
area. I would prefer to cheat a bit on the guy and ease the spinn sheet
than over trim the main. That is if I had to maintain a course heading.

You could be correct. You could maybe free the spinn by letting out on
the sheet

The way Nutsy was flying the Std Spinn without the pole, your guess is
as good as mine on what was out of trim. My first guess was that it was
set to low but then I got to thinking, he was hooked to the fore stay
and if he moved it up he would be burying the clew farther into the
shadow of the main!? When he tries it again , I think he should try
carrying it above shoulder hight. I'm no expert on poless Std Chutes but
I know they are shorter than the Assy and need the Tacks higher to get
the proper shape.

Your turn. You make the call for the poless trim?

Ole Thom