Fished Texoma yesterday and used my umbrella, very similar to the pic from crappie cillar above. I have a biminy top too but, don't use it. Man the umbrella up front was a life saver. My Lund has the bases up front for three pedestal seats. I used the middle one for the umbrella so two of us could still fish side by side and it worked perfect. Yes, it does interfere a bit when bringing in fish but, not enough to stop me from using it in this weather.
We were able to stay out much longer than ever before with the shade!