Jack Pearce admitted victory over Horsham in their Sussex derby prevented Bognor’s season going “up the swanny”.
The Rocks claimed a 2-0 win at the Camping World Community Stadium to rekindle their play-off hopes.
Tommy Leigh rifled home a 23rd-minute goal from 30 yards to put the Rocks ahead after the hosts had missed several early chances.
Bognor skipper Harvey Whyte added the second on 54 minutes when he was on hand to net after a free-kick came back off the Horsham crossbar.
Victory for Pearce’s side keeps them in eighth but crucially nine points off the play-off places with two games in hand over Carshalton Athletic.
The Hornets, who have a game in hand on Carshalton, are sixth.
The Rocks host relegation-battling Corinthian-Casuals tomorrow with Pearce admitting every BetVictor Premier game is now high stakes for his side.
The Bognor manager said: “If we had lost to Horsham that was our season totally up the swanny really.
“You can say that it is going to apply to most of our games for the rest of the season now, beginning with Corinthian-Casuals tomorrow.
“We have got ten games left and to give ourselves any sort of chance we are going to have to win seven of them.
“It might even be eight wins and two draws or three draws.
“Our start has really hit us but the other two clubs who are doing really well, Leatherhead and Hornchurch, are in the same boat as us.”
Casuals present the same sort of problem as relegation battlers Merstham, who held Rocks to a draw last Saturday.
Pearce said: “Casuals drew with AFC Hornchurch 1-1 last Saturday so we know they shall give it all they have got.
“Merstham are giving it all they have got, and so are Wingate and Finchley, so it is very tight.
“As I have said many times this year, I am not surprised when we beat the top teams but I am not that surprised when we don’t beat the bottom teams.
“There are no real outstanding teams and there are no real bad teams.”
Pearce felt the Horsham game against Dom Di Paola’s side was an even contest.
He added: “It was a good game. Both teams had chances and fortunately we took ours, and unfortunately for them, they missed their chances.
“On another day the result could have swung the other way but I felt we just about shaded it.
“I would expect their manager would just about have shaded it too and I would understand that argument.”