I'd say there's no league on earth (within reason) that a club our size, and with our resources shouldn't be following in some capacity. SPL is definitely in that, as would the top 5 or 6 English leagues and many of the African leagues (seeing as they was specifically mentioned).
I'm not talking about sending scouts physically to games all the time. If there isn't independent football industry scouting services/reports that clubs can subscribe to I'd be surprised. Companies set up to scout players/talent spot then sell reports on to clubs that subscribe if they spot anyone good.These would be competing with each other to be the best talent spotting agency.
Then I suppose people can keep an eye out for the likes of Opta stats or similar for whatever leagues have that kind of thing. You can watch a hell of a lot from your armchair too. I signed up to Bet 365 a couple of weeks ago and the amount of stuff they stream is insane. I watched 2 Italian second-tier games, and a Polish and Argentinian top-flight one on there today. They have allsorts on there including Guatemala, Indonesia, Paraguay to name a few obscure random ones. I'm sure someone, somewhere is watching those feeds looking for talent. SPL is on regular telly so that's an easy one. If someone catches the eye from video feeds you take a closer look or ask for opinions from people who know those teams/players.
Edit: All of that's irrelevant to whether or not this fella is good enough for us of course, but I'm sure we know what's going on in the SPL at all times. We could just give Choccy a buzz for a start. It's right next door, no language barriers etc. It would be really negligent if we didn't have some idea of who the best talents in that league are and weren't keeping some sort of eye on them, even if it's just very basically.