Unlike
@virosh, I'm quite happy taking out a FC for exploration, sending it 500Ly ahead and then single-stepping the systems to catch up with it. I've been out a couple of months and slowly heading towards Sag A* for the third time (it's looked different each time). It's been several weeks - and several hundred systems - since I arrived anywhere that's been tagged already. It's so peaceful. I even found a planet variable enough to make a circumnavigation in the SRV interesting .
Last night I was the first to run a FSS over BLAU AIS IS-K C24-8: five HMC planets, one terraformable; three WWs, two terraformable; an ELW; and a Jovian giant. It's like Christmas.
If there are exploration cheaters out there, they are not doing a through job.