Yes I actually have a 100 GPM pump tied right into the high side next to the air bleed, this is how I have always started our other siphons, just let her run and shut the valve and you have siphon but no matter what, that 30' rule gets in the way unless you have pressure to push over the 30' rule. One thing I am going to try is I obviously have to get an additional 500' of pipe, I was thinking of trying 2 things here..... get black poly pipe to make this quick, just leave it in its roll and attach to bottom of pipe giving double the pulling volume, if that does it.....great, I don't think it will because there will always be the vacuum.
One would think just just increasing the pipe to say 4" on the down hill would "pull" the water over, I don't think it does but since I need to keep elevations around the 20' or lower I obviously have to go around so regardless I need the extra pipe so what if I add a 2" WYE at the absolute high spot ( air bleed/ fill point) and then attach the the poly pipe and run it down the hill to exact location giving me double the volume "pulling".........I will attempt this because than it's easy peasy, trench, done. My guess is this won't work because of the 30' rule but its a cheap test regardless since one way or the other I NEED the extra pipe.
I really, really hope I can fake out mother nature because walking through 700' of woods with a laser level because there are NO accurate to the 30' elevation APPS or even altimeters available that are within the 7 meters+/-
