Lian was kind enough to email me this handy baby snake sequence:
I thought I'd share it, in case anyone else wanted to try it.
She told me that if I angled the jumps like this for a while, then lined the jumps up in a row (like I had done in my video), Oreo would automatically jump right over them when I sent him.
I tried it this afternoon, and it was so easy! The hardest part for me was setting up the jumps. I had to keep looking at the diagram a thousand times, and turning the jumps this way and that. I never was very good at geometry.
Once I had the jumps in position, Oreo was flying over them, and I gradually put them back in a straight line.
Lian was right. Oreo jumped right over all three without me having to do any elaborate hand commands.