the rudder set up on my warrior 29'6" catamaran is controlled by lines to a teather point half way up on the rudder and can be cleated off in either position, there is also a small hole into which a dowel can be inserted to hold the rudder in the down position and i gather that as soon as the rudder touches the bottom the dowel is sheared, i tried it out sailing on to a shallow sandy area and found that the whole process is difficult to manage and hanging over the stern to re-insert the new dowel is difficult and tenuous to say the least , a suggestion i recieved is to fit some sort of quick release cam or cleat, any ideas as to where i could research this problem?