My guess is your prop to pad is not where it should be. It should be below pad 3-4”. I assume your trim is fine cause without trim you’ll never get to 5700rpm with a 24p prop. However you may be getting to your max trim to quick.
watch some videos or read up on the proper way to measure your ptp and reassess.
as for your transducer it’s likely fine but I’d look into a transducer saver to mount it on the jackplate. To much liability of damage in that spot
like to see picture of your talon setup. When looking at the bottom of your talons each should be below the bracket by roughly 1” anymore and she will drag ass