Can there be to strong of a current to catch crabs
the problem is --- that it is an open ended question, just like - Can there be too strong of a wind to catch crabs
the open ended answer is yes - can you catch crabs in a 150 MPH hurricaine wind or in a 50 MPH flood current
add to that the equipment used
so the best answer is "it depends"
sorry I couldn't give you a easy answer