***** My real tip for all coilers *****
Everyone wants the biggest sparks - right?
My opinion: Don't think of a TC as just an exercise in getting the
longest sparks.
My longest spark photo on my home page is about the 43rd photo/video
down because it doesn't matter.
Spend money on a better camera/video/flash/tripod. Do something
different, take some fabulous photos.
Google "Tesla coil" images. I currently have 20 of the top 100 photos
there. As it happens my longest sparks picture is about number 100.
Many are of sparks or streamers are only 1-3 feet long but in the
context of an Xmas tree or car thief protection or sparks in a pool that
is fine.
All of my techniques are easily reproducible and were trivial compared
with the original construction of the coil.
After years, I have still not seen a decent rotating breakout picture
done by anyone else.