Here's what we did on our 27...
The bimini is sized to extend from the dodger to main sheet. The front of the bimini either attaches to, or over, the dodger. The back has four grommets. The two center grommets attach to the split backstay with bungee cords. The ouboard grommets attach to the stern pulpit rail. It is not perfect, and it is a chore to go forward, but it works! You must remember, though, to reposition the bungee cords if you gybe or let out the main at all.
