You can use dotlan in nullsec regions and look for npc kill delta, if its + that means there is more ratting this hour than last, then you know if there is a vexor navy busy running anom’s.
They love haven’s the most for some reason, followed by forsaken hub and sanctum. Bring a strong ship as 100mn vexor’s can’t be scram’ed. So if you keep your mwd on to chase them, it sky rockets your sig making it easy for they’re drones to tear you apart.
If you want a lot of kills you can go diving, spend some time scanning wormhole’s and book mark a bunch of null holes go through them book mark each side and take note of where they go, wormholes are amazing as they let you get behind eye’s as people usual put their eye’s on a funnel.
If you want to be even more fancy use an scanny alt and go to the drifter wormhole’s and scan all those sig’s, they will provide you a lot of pvp content with lots of wormholes to nullsec all over about 3-6 null holes per drifter hole. This method has gotten us the most fight’s, as most people don’t even know what a drifter worm hole is and have never bothered to look inside.
Just make sure cloak your scout alt as the drifter BS’s have a 2 second lock time wait for them to go into the hole before it’s usually only a 5-10 minute wait before they jump into their hole then its safe to go through.
What ever you do, do not roam as it usually ends up being 3-4 hours with very few kill’s, warp speeds are way to low to do it.