The first time I used my 2 new baby mojos last year, I could barely get their butts out of the water. Had to cannibalize the two poles to make one longer pole. Only could use one mojo.
Here's how i fixed the problem:
Get a length of 1/2 inch square aluminum tubing. I use a four foot long piece but you can get them longer. I could not find it in hardware stores but it exists on line if you look. This will essentially replace the short skinny 1/2 inch bottom section of your original stake. drill a hole about two inches from one end of your new aluminum tube. make your hole the same diameter as the hole near the end of your middle section of your original mojo stake. pin the two sections together. I use a hitch pin. They should fit snug, not wobble, and be easy to set up and take down. pound the other end of your new aluminum tube shut so it won't collect mud. My rig is about six feet tall. I made two. They separate in the middle so I can load them on a sled or cart without long poles hangin' out. They are light weight and do not rust, well, the aluminum parts anyway. (You don't use the bottom section of the original stake unless you are in shallow water or dry land or you want to create an effect of two mojos flying at different altitudes.)
If you need more specifics, let me know.