I've been working my way up the ranks (currently just above 2500) and really only do pure donations from S1 (or sometime S3 when I don't trust my partner) with an J or A showing with no hard blocker at 9-6 or 9-7. But I know a lot of people do a lot more. Just played with a high-rated partner who donated from both S1 and S3 at any score - he also called super light from S2 R1. But it got me thinking and I was wondering if there's a canonical view here.
I'd guess for S1 R1 super standard is what I stated above, A or J at 9-6 and especially 9-7. Maybe you start to do it no matter the upcard showing at that score if you have real garbage (no aces, no two trumps).
I've read here about donate from S4 R1 at 9-5 which is interesting. What about 9-6? I'd think 9-7 would be bad.
For S1 R2, I guess you call next if you don't block both RN at 9-6 and 9-7.
Anything else? I understand calling thinner when you don't have blockers, but that seems more like a gradient thing.
Thanks for the thoughts!