I've got an easy-troller plate on my 40 and it is very effective. It was too slow for spoons and crank baits so I added an additional stop where I could set the plate half way down which has me going a nice speed. It doesn't kick up automatically but it does have a spring loaded hinge to prevent bending the plate if you forget.
With the plate all the way down its too slow and can be miserable to control the boat in the wind. I don't have a gps in the boat so I can't say how slow but I'm sure you could run bottom bouncers.
I've got a kicker I just carry around in the bow because it's more convenient to troll with the main.
Here's a pic of the plate set at the half way notch.