Duncan Milligan stepped down from the role following Saturday’s 8-1 home defeat to Division One leaders Winterton Rangers.
Milligan, who only took over in June, had endured a difficult start to the season, winning just one and drawing one of the opening eight games in all competitions.
“I spoke to the chairman after the game and had a good long chat,” said Milligan in a statement.
“I’ve discussed where I think my flaws are, where the current players’ flaws are and where the club as a whole falls short at the moment and that something is just not working.
“I’ve been open and honest and told him I’m lucky enough to work in football full-time and the way NCEL football is going I’m not sure it’s for me.
“Unfortunately a big percentage of players don’t seem to have the desire to want to commit to training and playing for a club July to May nowadays. It’s a real shame especially when so many people out there work for their clubs and give their time up 24/7.
“I’ve been fortunate to have two great clubs to work with at this level in Worksop Town and Rossington and there are many people at both clubs who deserve medals never mind wages and they are the unsung heroes.”
After Rangers had taken an eight minute lead, Lee Holmes got through one-on-one with the goalkeeper only to hit the post.
That was as good as it got for the home side as Rangers went 7-0 up late into the second half before Ben Hunter rifled in a stunning 82nd minute free-kick, although Rangers had the last word with a late eighth.