On their web site they have "bar clamps" in the accessories. These fit the A Cat and Blade booms. They are pretty tight on the Blade boom but work fine. Easy to remove from the boat that way. It sounds wierd but to see it from either side you just rotate it around the bottom of the boom. On one tack or the other it will be upside down. It takes very little to adjust to reading it upside down then on the next tack its right side up again. Ed