Hmm, the only spot I've ever done didn't turn out too bad.  It was this
pilot's first time flying with me in the plane.  I sat in the student
position.  My friend was actually spotting.  I just leaned out the door
and looked down.  My buddy would tap me on the legs for the corrections.
I would look back at the pilot and jerk my thumb and yell the
correction.

My buddy said that the pilot looked at me, rather strangely, then looked
at him, my friend just stared back, and then the pilot shrugged and
turned
the plane.

My worst spot would have to be either the tree story, (short spot and no
radios), or the time my spotter was giving me odds on whether we'd make
the DZ.  On the first pass he said we had a 75% chance.  I agreed but as I
started to climb out he changed his mind and we did a go around.  On the
second pass he gave us a 95% chance.  We went.  After opening my friend
had to fly side-by-side with me yelling directions because we were to far
away for the radio guy to even see me.