Here are a few approaches I used. ROPS mounted lights is my last choice. I tried that and was not satisfied with the installation. I tried it on the first two open station Kubotae (slow learner). A couple of the negatives of that location were:
1. They attracted bugs. Attracting bugs isn't all that bad except the proximity of the lights to my head made it a problem. Attracting bugs to the grille or outside the cab is no big deal.
2. The lights from the ROPS mounted lights, being higher and behind me, caused substantial glare bouncing off the lenses of my glasses.
As I mentioned before, floods are my go-to for lights. Get as much light as possible spread out near the tractor. No point in using spots on something with a max speed of 17MPH
The amount of light that the LED's produce while sipping a small number of electrons make them a good investment.
First two pics are from the first Kubota (B7500). After my first bad experience with ROPS mounted lights I mounted a couple on the FEL frame. I can't find any night shots but they worked very well. They threw a wide pattern with no glare problem. They lit a wide 180° area.
Third pic is the L3200 with DIY cab. It had two each of Front, Rear and Side mounted at the top of the cab. These were old school halogen lights like the ones on the B7500.
Last two pics are the L4240. This has two each Rear and Side, plus four on the front. These are all LED, and they make a whiter light. The front has two on the factory cab locations and two in the grille. The two on the grille work best for mowing because they shine across the grass to better differentiate between the cut/uncut. The two higher ones are flipped on mostly when the FEL, forks, etc are being used on the front.
The last pic is also from the L4240 and shows the area lit with a sidelight that is tucked into the loader frame tube. The fore and aft mounted lights left the areas to the sides of the cab unlit. This was especially annoying when mowing at night. Tucking them into the loader frame tubes keep them totally out of harm's way.