The topic of perch traps seems to get asked alot. Here's the relevant info from Texas fishing regs.
https://tpwd.texas.gov/regulations/outdo...evices-for-fishPerch Traps
For use in SALT WATER only.
May be used to take NONGAME fish only.
May not exceed 18 cubic feet.
Must be marked with a floating visible orange buoy not less than 6 inches in height and 6 inches in width. The buoy must have a gear tag valid only for 10 days attached.
Must be equipped with a degradable panel as described for crab traps.
Buoys or floats may not be made of plastic bottle(s) of any color or size.
It is unlawful to place any type of trap within the area in Cedar Bayou between a department sign erected where Mesquite Bay flows into Cedar Bayou and the department sign erected near the point where the pass empties into the Gulf of Mexico
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Now if you were to ask me about baiting a minnow trap, I'd suggest that you get a prescription pill bottle, drill a bunch of holes into it, pack it with canned cat food or dog food and click the lid. Stick that in a minnow trap and you'll be good to go.