Seeds said: “We were really pleased with the win, especially after most of the team had played against Halifax on Wednesday night, but there is still room for improvement.
“We need to be a bit better than last week when we face Keighley Cougars on Sunday.
“We’re fully aware of how well they’re playing, so the lads are going to have to step it up a gear this week.”
Demetriou said: “Whitehaven will be looking to get back to zero points and start pushing up the table as quickly as possible.
“Not a lot of teams will get three points from a trip to Whitehaven, so if we can do that it will be massive for us, particularly at the back end of the season.
“They’re a strong team and I don’t think it’ll be long before they get rid of that points deduction.”