So, I went ahead and am using Pool Putty to fix my plaster. Yes - it's the underwater epoxy stuff. Carl, I'm not sure what you meant when you said "it's meant for hard sided pools". My pool is gunnite / plaster / concrete. That's hard sided - right? I'm hoping it lasts a few years.
I neglected to mention that the disintegrating plaster spots are fairly small - maybe the size of a $0.50 piece in most cases, with one or two being 4" in diameter.

Replastering is tough here in E. Central IL. We've been getting tons of rain & it's tough to get a pool drained long enough for it not to heave up when empty (or so I've been told) - especially this year, so far. Also, I'm not sure who I would trust to replaster the pool.

Thanks.
Rob