We all know that any team can beat any other in 1 game. After nearly 30 games the league table is now struggling to lie.
Of course the table shows differences, but the point I'm making is that they're not that great...we've played Stevenage 3 times this season 1 win 1 draw 1 defeat.
OK sometimes you get a side, say like Hyde in the Conference, who've had financial problems lost all their players etc, so are clearly in the wrong Div and aren't competitive and get stuffed more or less weekly.
However most of the teams in Div 3, have comparable budgets, with the exception of Wolves and a few teams with a bit extra, so adopt a strategy of signing free transfers, loans with perhaps one or two bought for small fees.