Part Deux
What these do is wrap the 1" cargo frame with stainless and allows yo to tinker with mounting locations and angles easily as the original Monster clamps you need to drill into the cargo top frame. These made it easier to adjust and in my mind provide much better strength and support that 4 screws as teh stainless wraps the 1" frame tubing. The problem was these were a major pain to get around the bends in the frame tubing. It can be done but it'll scratch the tubing up some, which is minor to me and some of the scratches get hidden by the canvas. You can somewhat see these in the 4th picture from the left on the Moomba install thread post #15 (same link as above)
You will also need at least one 5/32 drill bit (more is better in case they dull or break). Also you will need a 10-24 Thread Tap to add thread to the mounting holes, I got mine from Sears. Then you will need 8 10-14 X 1/2 stainless screws (Lowes or Home Depot), and some LocTite (I used LocTite Red)
Okay now that you have ordered what you want from the basics 4 speaker clamps, non-slip pads, and 4 new Taco flat bottom Ball Hinges or you go all out like I did, the next thing you need to do is mount the new Ball hinges to the new Speaker Clamps.
You'll need to make the Center lines Across the flat round mounting area on the speaker clamps. I just used a couple framing squares and pencil and eyeballed it. But it needs to be as close as possible to center. Once the centerlines are marked place a new Ball Hinge onto the centerline showing through the screw holes. Mark the screw holes onto the flat round mounting area and drill them out with a 5/32 drill bit. Once the mounting holes are drilled you will need to use th e10-24 Tap to thread the holes. After that add some LocTite to the newly threaded mounting holes and secure the Ball Hinges to the Speaker Clamps.
Add the non-slip pad (it is a black flexible plastic looking pad about 4 x 6 inches I think several pads per package, kind of a ribbed texture and self-stick on the back,)to the speaker clamps if you have not already.
From there it gets easy to finish the install.
Good luck and if I need to clarify anything let me know.
Great looking boat BTW!
Kraig