The Tigers stunned reigning champions Leeds in the second match of the season but have since picked up just one point from six matches and are only above bottom club Salford on points difference.
Shenton's men face a potentially make-or-break spell over Easter with a trip to St Helens on Easter Monday followed by the visit of leaders Huddersfield next Saturday and the skipper admits there would no better time to end their losing run than at the expense of local rivals Wakefield. "Derbies are always that bit more special," Shenton said.
"We showed against Leeds that we can get fired up. If we can get that kind of build-up again, I'm positive we can get a good result against Wakefield.
"We just need to get a win at the minute, we're so desperate for it, and to get it at the beginning of Easter as well would take the pressure off a little bit going into the St Helens game.
"It's a pretty big game in our season. We're in a bit of a rut at the minute but I'm sure, once we get a couple of wins, we'll be fine. We know that on our day we can match anybody."
Castleford have Australian winger Justin Carney back from a two-match ban while front-row forwards Jonathan Walker and Jake Emitt are in contention for a recall as coach Ian Millward prepares to rotate his squad.
Wakefield are at full strength following the postponement of last week's game against Leeds, with scrum-half Tim Smith fit again, along with forwards Justin Poore, Ali Lauitiiti, Danny Kirmond and Andy Raleigh.
"The postponement has given a chance for some of the guys that have been missing to get a full week's training under their belts and should leave us going into the Castleford game a bit fresher," said Wildcats coach Richard Agar.
"We'll see on Friday if that's done us a favour or not. We are picking from a fully-fit, full-strength squad so that's a bonus for us because those players are very, very important for our team and it will be good to get them back."
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