Even when the toad doesn't put much tongue weight, make sure the set doesn't allow much of play.
I start paying attention to big DP pulling toads.
On huge % of them - the toad fishtails quite a bit.
My impression is that small Jeep or R4 might not make impact on 10 tons DP, so driver has no clue about the problem, but I always picture in my mind his face at tire shop wondering why the tires with 10,000 miles are getting bold. :)
Long overhang, where extension adds a lot to factory long overhangs amplifies any fishtailing trailers and toads have.