No, there are no foxers.
Since homing torpedoes are much too effective in SH3, I have tried to come up with a foxer mod, but have not succeeded. I made extensive tests to figure out what the homing torpedo is tracking/aiming for, but couldn't find it out
I moved sound nodes, propellor nodes,... but to no avail.
In the end I gave up and pragmatically solved the issue by implementing a sufficiently high failure rate for the homing torpedoes via SH3 Commander. Although not as nice as a true foxer mod, this approach effectively does what a foxer would do: making the homing torpedoes less effective.
Regards, LGN1