Technically little dark photo, focused nicely but having boats on the middle of the picture was not a good idea. After all, you are trying to show us the sunset. The sky colors on the background nice but almost lost in whole photo. Try to look at this photo with tighter crop, say put the boats on left bottom somewhere and show us more of that wonderful sky. Little more brightness, you could be around 5.6 to 6. You might need a bit more sharpening though if you cropped that much.
Second entry and doing well. Points are going right direction. Check the previous winner photos in DPC. Don't duplicate them but they are good samples of good work, you should learn something from them.
Man, what I would give for a Florida winter right now! I don't care much for the composition tbh, I'd like to see the subject moved more off-center I think.
Lovely colours here and the addition of the boats in the shot is good. Composition would be improved if they weren't dead centre though, and I would have cloned out the tiny bit of shrubbery that shows on the left side.