you will likely find nothing from orbit
you can find them in an srv
yes, sadly 4.0 as such there is no difference in edo or edh any more
the breaker is rng vs geysers/fumaroles
since horizons was removed, the rng is better at failing than anything else.
but yes, even last night managed to come across skimmers on a planet for no reason...hunting meteorites.
they will not have a poi that is listed in the nav panel or anywhere
if you know how the sonar on the srv works, then you are good to go, I guess.
the only thing I know of that breaks anything on planets is geysers and fumaroles
if they exist on a body, not much else does.
if they exist, I won't land, there is no point.
in horizons, skimmer missions were very easy to do and fun
imo to do them in Odyssey means your head is already in pain and you want it to hurt more.