The latitudinal edge on the rear-third of the bottom looks
like it would act as a release point--however, the tail would reengage because
it’s still in the water. Ultimately, wouldn’t the step produce more drag?
check out the tommy peterson fireball fish. channels with a step bottom. i made one and it’s a blast to ride. the step is a few inches in front ofthe fins so the water is churned up when it hits thefins, creating lessdrag. if you have the materis its definitely worth building your version of it.