Recently, I came across an awesome, new tool. It allows you to put a permanent nut on the under side of a piece of metal that you cant reach by hand. It acts like a rivit, but the underside has a threaded portion where you can thread a bolt into it. There is three different kinds of names for them; a rivnut, a nutsert, or a threaded insert. The cheapest one I could find, and could also get locally, was at Harbor Freight. Here is the link to the product on their site.
With that in mind, you could incorporate that threaded insert into that front step/seat of your jon boat. Then use a couple of bolts to fasten the transom mount trolling motor bracket to that metal step/seat. Depending on the size of the bracket, I would use at least four threaded inserts if not more.
I used the threaded inserts on my jon boat to fasten my deck down to seats below. That way the weight is being distributed evenly and that weight is being places where it is meant to be carried.
When you go to mount this bracket, make sure that you can operate your trolling motor with out any issues. One thing to double check is how close the bracket is to the tip of your boat. When you put your trolling motor straight up and down, does it hit your bow at all? I would recommend mounting your transom mount trolling motor to the bracket and placing it in position to make sure everything works before you start drilling, making holes, and making things permanent.
When using the threaded inserts, follow the directions that came with your kit. This is how I remember using them;
- Figure out the placement of where you want to put your threaded insert.
- Determine the size of threaded insert you want to use
- Drill a hole that perfectly fits the size of your threaded insert. You should just be able to fit it in the hole but not be able to turn it.
- Use the hand tool and install the threaded insert.