DAVE Webb said his sympathies were with the travelling supporters after watching his Supermarine side sink to a 3-2 defeat at Taunton.
Marine had taken an early lead through striker Ash Edenborough in the Division One South &West fixture, before James Blake equalised soon after.
The Taunton captain was sent off after the break but Blake added another and a penalty from Simon Ingram after 76 minutes made it 3-1.
A goal from TJ Bohane in the closing moments proved only a consolation for the visitors.
And Webb said afterwards: "I feel for the supporters who came because we weren't at it at all, and that's very disappointing.
"Anybody who has travelled two hours on a coach from Swindon to watch a team play like that, has got to be disappointed. That's what's hurting me at the moment.
"We've done everything right and our preparation was good, but we didn't deliver. It's not a nice feeling and I don't like it.
"We've got good players at the club and I tell them when it's good, but they have to be told when it's bad and it wasn't acceptable what was delivered.
"They all know that and we all have to take responsibility for that.
"I'm not feeling great and hopefully the players don't feel great, because you have to reflect on performances."
Webb also warned that his side were becoming 'reliant' on goalkeeper Kent Kauppinen's displays, stating it was not a scenario he wanted to see repeated regularly, "If it weren't for Kent making three good saves then the game would have been finished at half time," said Webb.
"Kent's kept us in the game again and I'm fed up of saying it, we can't just rely on his heroics in goal to keep us ticking over.
"That's not to say no one's trying, but although Taunton have got a little bit of quality in certain areas, they are a team we should be beating.
"The 3-2 scoreline made it sound like it was close, but it wasn't."
Cirencester continued their chase of Poole at the top of the table with a comfortable 3-1 victory over visiting Winchester.
The Centurions opened the scoring after 10 minutes when Sam Collier's shot was stopped by a hand and Scott Griffin converted the resulting penalty.
Four minutes later Joe Shepherd laid on the pass from which Aiden Bennett fired home.
Michael Charles headed the visitors to within a goal on the half-hour mark, but Shepherd got on the scoresheet himself midway through the second half to wrap up the win.