I'm just wondering about very basic best practices for securing the lines on a 2000 340. It has two winches, on either side of the companionway, no cleats on the sides of the cockpit. Are the flimsy grips sufficient for the jib sheets? A number of experienced sailors have noted the absence of a third winch and cleats on the sides of the cockpit. How do you keep the lines secure without cleats? And are you just meant to use the clutch for the mainsheet? (I also note that the line for the boom vang has nowhere to go on my boat.)