If you want to use the mosfet in place and reinforce the tracks, i attached a picture which shows 2 tracks to reinforce to the mosfet terminals. It should be done with a solid core copper wire, diameter like ~1,5-2mm, preferably isolated on the length.
Also there is a 3rd, a shortcut between two connectors to bypass the 11A PTC. But instead of doing that last shortcut between connectors, you can also choose to simply solder the wires that would be otherwise placed in those connectors. Those two wires do not go anywhere else, the only purpose was to have them through the fuse, but since you want to bypass the fuse its simpler to just solder the wires externally. You will need a soldering tool either way.
Good luck.
Also there is a 3rd, a shortcut between two connectors to bypass the 11A PTC. But instead of doing that last shortcut between connectors, you can also choose to simply solder the wires that would be otherwise placed in those connectors. Those two wires do not go anywhere else, the only purpose was to have them through the fuse, but since you want to bypass the fuse its simpler to just solder the wires externally. You will need a soldering tool either way.
Good luck.