best place to cross the Mersey in the never never

Thinking of the never never in winter.
I have been told the best place to cross the Mersey, when the river is not low, is upstream from McCoy Falls with a back up at Fergusson Falls.
Any comments?
I have been told the best place to cross the Mersey, when the river is not low, is upstream from McCoy Falls with a back up at Fergusson Falls.
Any comments?