On my Catalina 315 I was able to sew up a flat awning that zippers onto the aft portion of the dodger, and extends to the split backstay. The aft end of the awning has a pocket going all the way across that holds a wood stick...3/4" x 2"...the width of the awning. The wood is what attaches to the split backstay and provides an even pull on the awning.
The advantages of the awning are:
- It's only up when we want it. Not when we're getting out of the slip, putting up sails etc.
- It's the height of the dodger, so it's lower than a bimini. The lower the canvas is, the better it blocks the sun. More shade.
- It takes about one minute to deploy
- Provides rain protection, so at night we can deploy it, and have the screens in the companionway
- Rolls up around the stick, and stows easily in the aft berth area.
- You avoid the extra "plumbing" of a bimini....the tubes that support it and terminate on the deck.
- The aft stick can be adjusted lower in the situations where the setting sun is on the stern, cooking us
- It's a lot cheaper than a bimini. I was able to make my own with my 1972 Kenmore home sewing machine.
Disadvantages:
- Can't stand under it.
- It ends at about the steering wheel
- Being flat, it may not shed rain as well, but the aft stick can be adjusted lower on the backstay to create a greater slope.
An awning like this won't work with every boat. Depends on the relationship of the backstay, etc.. And it's not going to work for every sailor. We're in Michigan, and mostly daysail, so with the way we use our boat, it's vastly superior to a bimini....for us.
One more thing about a lower awning creating more shade. Imagine you have a tarp 4'x 4' one foot over your head, and how much it will protect you from the sun. Now, raise it 3 feet above your head. You've lost most of your shade, and if the sun is at an angle, the shade patch might miss you altogether. Lower is best.