I decided to take night vision.
Also: i've tried again with finding biological stuff and once again I can't find anything even after flying close to the surface for half an hour. Not in the mood to get into orbit again and try another spot … sigh
Depends what you are looking for, if it's grass, Tussock or Frutexa one of my primary strategies is simply to land in the area and step out of the ship, often I will have landed directly on a patch, you can rarely spot it while flying. Stop, hover about 20mtrs up, fire up the free cam (make sure it's set up to scroll around first) and use that to search the area around the ship close to the ground, other stuff, well there are rules for that, they aren't all written down so feel free to ask for a particular bio.
Easy to find bio, Stratum, Tubus, Aleoida, Clypeus, Electricae, Fonticulua, Fumerola, Recepta, Cactoida. Hard to find, Tussock, Frutexa, Fungoida (sometimes,) Bacteria, Osseus (again sometimes,) Concha.
Start with the easy ones first, the "sometimes" ones have variants that are hard to find and variants that are easy to find, experience does make it easier.