Hi Michael,
Sorry, I can be confusing... I made a short visual to try and be clear about what I am asking... I also think I determined what I needed originally, and perhaps a script could still work?

Basically I need a "longest line" highlighted.. So in the video, I created an array of 30 lines to measure a small area by trimming the lines and manually measuring them... If I wanted to do the whole curve at a more finite resolution, I may be talking about a couple hundred or more curves...

If I manually did the array and trim, could a script pick out and highlight the longest one (Or 2 or 3 if they were equal) Possibly discarding all others? I think this would get whats needed...