Good choice over bimini. I put a bimini on my boat. Doesn't cover the front or rear deck but couldn't fish if it did. It rarely works for shade because the sun is coming in from angles most of the time. Is more of a pain to put up. I only use it if it is raining. In fact it gets in the way and caused me to fall out the boat one night. I've thought about an umbrella to go with it for my wife.

With the umbrellas, they can be made to tilt which would help block sun. The only advantage to the bimini is that I can run across the lake with it up