The Pirates have not won in the league since October, plunging them into a battle for survival, and new boss Dave Penney has enlisted the services of the tough-tackling Brentford defender in a bid to boost his side's prospects.
McCracken, who made his debut in the 0-0 draw against Hartlepool, is ready for challenge and told the Evening Post: "We need to start picking up points and I don't think it matters how we go about it.
"The game against Hartlepool may not have been the prettiest to watch but we got a clean sheet and a point and now we have something to build on. If we have to do things the ugly way to get us up the table, then so be it.
"I've been in this situation before when I was a player up in Scotland with Dundee United. We teetered on the brink of relegation a couple of times and I know from experience the only way to ward it off is to do the ugly side of the game right."