Here's the info I think:
The left return lane ALWAYS lights the Long Cast. (The light is always on.)
Also, shooting the ball up the right loop while Long Cast is NOT lit will
light Long Cast (seemingly until you make the shot). After making a Long
Cast or lighting it from the left return lane, it will time out after 10-15
seconds or so. (So I'm not TOTALLY sure...) The first Long Cast you make
scores 1M points, then 2M, etc. maxing out at 5M. As stated, each long cast
lights the next highest value on the captive ball that isn't already lit.
You can light all of the values before collecting any of them if you wanted.
If your current value is about to time out, and you go through the left
return lane, it will relight for the full amount of time again, and KEEP the
current value.
The right return lane lights Fish Finder when lit. It starts the game lit,
and will remain lit until the Fish Finder is collected. When you go over
the microswitch, you have around 15-20 seconds to shoot the eject hole. If
you get it, the right return lane will go off. To relight it, spell LIE
(this is non-cumulative; i.e. you can't spell LIE 3 times and expect to get
3 Fish Finders in a row). The right return lane will NOT be lit during
multiball and if Video Mode is lit. If it goes off for one of those
reasons, it will come back on when it can.