ive had a ibc in my tranist for 9 mnths,
i hold my hands up to say its not baffled, & its held in with 4" wagon ratchet straps,it has never moved in 9 mnths & dnt really fel the water in it when moving.
the next 1 is gettin fitted this week it will have 4 x 4" eye bolts thru the floor,with 4" plates on top & under the floor, then 2 lg ratchet straps over the tank, but this tank will be baffled,