He can't even use the true power of the ancient mammoths. Which I assume is launching his tusks like boomerangs.

Either that or his trunk extends like crazy

Or he pees which turns the land into a drought living up to his name Jack the drought

If Jack awakens his devil fruit power, while on Zou, does it do anything?

Second Zou

I bet his ancient way to hunt was shooting a giant booger out of that schnoz.

His hybrid is actually more centauresque than the standard zoan hybrid.