Hi there - what a coincidence, I just made myself a JATO script a week ago.
It was necessary for a mission where I wanted to be able to take off from balota with a C160 Transall.
I will adapt it for the C130 and try polish it a bit more. The boosting part of my script isn't as sophisticated as described in your link above fnadde42, but mine got some fire and smoke : )
I will post it here tomorrow or the day after.