One item in the Sinnoh games was the Poke Radar, which was useful for finding exclusive Pokemon, creating chains, and finding shinies.
Did you like using the Poke Radar? What were your longest chains? Did you find any shiny Pokemon with it?
I used the radar a few times to try it out and see which Pokemon I would find. I’d have to check my games to see what my best chains were, but I know they weren’t too long. Machop was my best chain on Platinum IIRC.
Overall, though, I didn’t put a lot of time into the Poke Radar. I wasn’t too concerned with getting shinies and I just traded/transferred the radar exclusive Pokemon from other games.