I have a 2008 350, so the setup should be similar. I also had a hard time understanding how both front and rear bimini connected to the arch when you want to go "topless", until I saw several photos of another boat. I will send you photos tomorrow. For the front bimini to secure to the arch, you will need the zip-up "connector" strip that wraps around the front frame's top bar.. the connector secures the top bar to the arch using the two twist pins on top of the arch. If you have the boots, those go onto the connector before you secure the connector to the arch. For the rear bimini, it does not need a connector because the frame is secured entirely by the spring-loaded clips that are already embedded into the arch. This will make sense with the photos.