My other half just sold her 2004 Lancer and that had a tow bar kit on it (dealer fitted), the maximum weight on the bar is 1000kg with 100kg down force.
The restriction is that the 1000kg needs to be braked and from memory the unbraked capacity is only 500kg. Only smaller open boats on trailers with light motors would be under this unbraked limit. Another possibility would be to option a braked trailer.
But if you can get a tow bar on the Holden ute (even if it requires modifying the body kit) then it would be without question a much better tow vehicle.
The only thing we ever towed behind the Lancer was a 6x4 trailer and it wasn't great even doing that.