I assume that you have already attached a line so you can get the new cable back through.
There may be a zip tie, it should not have one (or more), or something is caught or catching. The only one that I have done, I pulled it forward from to the opening on the floor near the drivers area.
Once you loose all patience, won't it be satisfying to just replace what ever gets ripped out in that final heave-hoe.
1997 MasterCraft 205
2008 Moomba Outback
1999 MasterCraft Sportstar OB
1992 MasterCraft 205
1999 Malibu Response LX
1987 Marlin Magnum Skier