Sanger owners, rope length?

Hey guys I have a little time on my hands since I sprained both ankles pretty bad do an air raley.

so here's the question those of you with Sangers what rope lenght do you ride at (do you count handle length also?), and speed.....

I have been riding at 70 (65rope+5for handle)about 22mph. I use a 600 sack in the center of the boat starting at the drivers seat going back plus the triple ballast. (V215 05)