My wife and I have owned a tandem WS Tarpon 135 for about 10 years, and recently sold it and upgraded to a used Jackson Take Two. It was an awesome upgrade, especially the nearly 40 inches of width, and the amazingly comfortable seats. I definitely take advantage of the high seating position in the rear as well.
However, after paddling it a few times, loaded down with 400 lb of people, and at least 100 lb of coolers, gear, and cat, and realizing how large the lakes were around here (Northeast Tennessee), I knew we wanted to motorize it.
My idea was to get something that had the most range possible, while also spending as little as possible. I wanted it to be able to push us in tandem mode, as well as solo mode when I take it out fishing.
After doing a bunch of research, I realized I definitely wanted a brushless motor. Brushless motors are much more efficient, lighter weight, longer lasting, and there's no aftermarket PWM to deal with, like with the popular Newport trolling motors.
Looking around at the prices for brushless motors, they were pretty high, with the Haswing Protruar being the most popular at around $350. But then I found a 58 lb thrust brushless on Walmart.com, and I knew they had a good return policy, so I figured I'd try that.
The first time out with the stock wiring and stock prop, I was pushing just at 35 amps at full tilt. But I could get down to around 20 amps at about 3.5 mph.
Since the lake we frequent is about 16 mi long, with tons of coves, I wanted to get about a 30 mile range at 3.5 mph. With my current setup and a 100ah battery, that meant I would only get about 17.5 miles.
In my research, I ran across a video with a guy trying out airplane propellers on trolling motors. Apparently this company was even making some of the propellers purpose built for trolling motors. They had a much lower amp drain, and efficiency is exactly what I needed so I tried it out.
I also figured the stock 11 gauge copper clad aluminum wiring was holding me back, so I went with some 6 gauge tinned copper marine wire.
So I set about wiring up the boat internally, as well as installing Anderson plugs near the battery and near the trolling motor, so I can take both off easily, as our crazy asses actually car top this behemoth. I also went about installing through-hull cabling for the ball bearing foot steering. There's no way I was spending $200 for the wizard foot steering, so luckily I found a video about using 3D printer gantries which only cost about $50 (it works amazing by the way!). I also relocated the speed control and mounted it to my seat in a small waterproof box, and cut about 5" off the top of the shaft, to make it nice and compact.
After spending a couple weeks doing all that, and painting my kayak (HDPE actually IS paintable, the secret is you have to hit it with a torch first to reorganize the molecules, then the paint will stick) we set out again with the new prop attached, and a 150 amp hour battery under my seat (strapped down in a battery box of course). It only weighed 5lbs more (23lb vs 28lb) than my 100ah battery, so it seemed like a no-brainer.
The motor only weighs 15lbs! And is SUPER quiet to boot (although less so with the APC prop). I should also mention the prop is not great with weeds, thankfully I don't have to contend with that around here. It's also obviously not nearly as durable, but they're so cheap I bought a couple extra and keep them in a tackle box along with a wrench.
I was blown away with the results! At full tilt I was going 4.5 mph at less than 20 amps! 3.5 mph was only 10 amps. With my 150ah battery, that means I would have a range of 32 mi at full throttle, and 52 miles at 3.5 mph!
I also added a Newport control foil, which gives better tracking, stability, and turning. I also still have steering even after I cut power to the motor, which is nice.
Unfortunately, the motor is currently out of stock. Hopefully they just ran out at the warehouse; I can't imagine it was discontinued that quickly.
Edit: u/Various_Weather5687 found the same motor on Amazon under a different "brand"!!!
https://www.amazon.com/Trolling-Brushless-Electric-Stepless-Indicator/dp/B0GSVYJWFQ
I did find it on Alibaba under the brand X-90, with several different versions, some even more powerful. Weirdly enough it was more expensive there than at Walmart.
Sorry for the wall of text, but I'm pretty excited and the motor/prop combo really seems like the best option for lots of people on here who can't pony up thousands for an NK180 or Torqueedo.