I found a 73 Mako 17, hull draft is 7 inches.Your actual draft would depend on your motor and the load.and how far you can trim up.
What bay and what is the typical depth?
launa madre down in south padre island. i wouldn't really know the average depth. but some parts are as shallow as a foot, foot and a half. the motor is a evinrude 140
I have no clue even as to what state luna madre is in - Ah - - - -have you measured from the water line to the bottom of the skeg? You can go quite a bit shallower if you tilt your engine up or take a risk of grounding and go like hell riding on top of the water on plane (but you better know the depth of the water pretty well).