My toukoi waza is standing Ippon Seoi Nage and this past weekend I started working on a mind map to organize information. I got a few basic categories: Kumi Kata, Entries and Set ups, Follow ups, Variations, Defenses and counters to ISN. I want to create another category of "Ippon Seoi Nage as a counter to other throws". Personally I've always used ashi waza for countering and never really looked into ISN as a counter attack. So far I came across three:

- Sampson Judo ISN countering Ogoshi

- Isao Okano ISN countering Osoto Gari at 4:25 mark and then ISN countering Ouchi Gari at 6:38 mark Isao Okano Ippon Seoi Nage

What do you all think of these three counter attacks? And does anyone know any other throws I can counter with Ippon Seoi Nage?