As some on here know I do some Academy scouting for Norwich, which location-wise is in a similar position to Gills being an outlier. There are hundreds of talented boys at every age group within our remit (1 hour 15 mins travel time for the young'uns) but you need a LOT of eyes to be able to physically get a chance to see them.
For example the area I cover is Cambridgeshire, and I only scout Under 7's at the moment. There are currently 52 under 7's sides operating just in the Cambridge region, so just getting to see all of them has taken me up until April, and that's before you factor in all of the other scoutable regions - Norwich itself, Suffolk, King's Lynn, Ely - that's a lot of manpower to cover all those regions, and that would only be for one age group! Kent is a huge county, just covering the Medway leagues would be hard enough before you even think about looking elsewhere in the county.
It does get easier the older they get though - you start to know which teams are the better ones, and good players start to make a name for themselves over the years, but any genuinely good ones tend to get snapped up right at the start.
As a club we just don't have the kind of set up required to fulfil mass scouting that Category 1 academies are able to do, and as NW says even if we did manage to find a superstar in Rainham they'd be off to Arsenal for £20 and a Mars Bar at 13 thanks to the FFFP regulations which have basically shafted lower league academies for the forseeable future.
The financial input required to get us to be a Cat 1 Academy frankly isn't worth it to anyone firmly outside the Premier League. Again agreeing with NW, the best thing to do is to be savvy enough to scout around the pre-existing academies, let them do the initial groundwork and then pick off players they deem not good enough but we can maybe work with, as we have with the likes of Jarvis and Dack in the past.