hello, I have a 20 acre lake that is overrun with carp. During the spring time I can look from my house down to the lake and literally see black masses of spawing carp. When is the best time to fish for them? night, day, summertime? Do I need to fish shallow water or deep water? Also, my fish finder shows large suspended fish. Could these be carp or possibly catfish? what size hook, and wieght?