Thats one thing about the AKA sheer bolts, each time they take a hit they deform a little, so they become a ticking time bomb. When doing surf entries one wave might not take them out, but each wave deforms them a little and they eventually break, might be 3 big waves or it might be ten, you never know. It's just good insurance to add the safety lines. Takes all of 3 minutes to make them initially, they are then on there for the life of the boat, we just stuff ours into the mesh pockets when not using them (mine are 5 1/2 yrs old now (exactly the same ropes and clips)). The smart guys like Tom Kirkman replace their sheer bolts regularly.
Just get some cheap 3/16 or 1/4 stretchy nylon line (like 125 lb to 200 lb test) and 2 stainless clips. Simplest form on the newer 2015 boats is clip to the lifting handle in the center of the left AMA, run the line around the front of the left outer center hull bracket then behind the sail brackets (so it's out of the way of the mast), then around the front of the right outer aka hull brace, then out to the lifting handle on the right AMA. With the AMA's out you want a tiny bit of tension on the line. Don't worry about the handles, they are very strong. Now it's important to test it. First remove the AKA brace and try to fold the AMA back (simulating a sheer pin break) it should only swing back maybe half way back then stop (preventing capsize). Next push the buttons in on your AKA bars and try to pull them out, they will of course come out a little but not all the way ( which is usually enough to notice while underway so you can stop and plug it back in). Next is the AMA test, remove the front bungy from the AMA and push down ( this is the one that usually breaks), this simulates a broken or weak bungy, the AMA should not come off (wiggle it simulating wave action, if it comes off increase the tension on the safety rope just a little) ( pointer... Leave the AKA braces unlatched until after you have attached the clips, then drop the braces on the balls (easier to install)). Now remove both bungy's from the AMA's both front and back (simulating forgetting to attach the darn bungy's alltogether), the AMA should not fall off. Now the real test (optional), go out under sail (full speed) turn around and ram the dock as hard and as fast as you can with one AMA. This is simulating a real collision, the AKA sheer pin should break, the AMA will begin to fold, as tension increases on the nylon line it acts like a giant spring obsorbing the boats forward energy, if the energy is too great the line simply snaps and the AMA folds in harmlessly, yea you might go over but you have not done any structural damage to the hull or AKA's. Pick up all your crap, put a new sheer pin in and your off and running again ( if you get scared, just stand up, your right next to shore (lol), ( I wouldn't really do the last part ( lol, just kidding around)) Obviously there are many other variations guys have done, I'm sure any work just fine.
We have done several terrible surf entries where the boat went sideways and we had to bail off and let the boat crash to shore, both sheer pins were broke but no other damage (knock on wood), in that situation you kind of want that safety line to snap and allow the AMA to fold against the hull (it's safest from further damage there). Of course by that point all your tramp clips have snapped and need to be replaced (the tramp clips break away like a zipper one at a time). Don't ask how I know all this (lol). I suspect we were just lucky we didn't fold or bend the AKA bars (which are pretty expensive (a couple hundred ea). Once on shore we replaced the AKA sheer pins, replaced the rudder pin and we were off again once the storm passed. We were smart enough to attach the bungys to the mirage drives before coming in so the mirage drives survived ok. I suspect that once we were in real trouble if we had not jumped out of the boat damage would have been much worse because of our weight. Don't ever get between the boat and shore, a dangling line behind the boat can help, something to grab onto while trying to guide the boat in nose first. Hanging on to the back of the boat itself doesn't work unless you enjoy getting thrown 3 ft in the air. Obviously we don't do this kind of stuff for sport or fun, but when sudden severe weather hits (usually without notice in Florida in the summer) you have to beeline for shore and safety. FE
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