The beam is going to be an elliptical shape. I had some engineering done on the shape it is stronger then a circle or teardrop mast section shape. The beam will be low profile and will fit in a sleeve by design it will take care of twist so no pin is needed. Plus it is different and blends with the boat nicely; the designed connecting beams were funky. That is one reason I had more freeboard designed in the ama's to meet the beams better. I may build a channel and cut a groove in it to slide a tramp boltrope inside like a mast.