Motorguide X3 speed and run time
I'm trying to find information concerning speed and run time for my boat and trolling motor. I have a '94 Tracker Tournament Pro 18, '94 40hp Mercury, Motorguide X3 55ft/lbs (not sure of year). Battery is a Duralast Dual Purpose class 29, 830 marine cranking amps, 205 reserve capacity (bought last year). Trolling motor is the only thing connected to this battery.
How fast and how long should this TM move my boat (I understand that results may vary)? I see comments of 2mph or so and lasting 4-6 hours. I might go 1.2mph for 1/2 hr and then the speed keeps dropping to maybe 8/10ths mph. This is with the main motor out of the water. I have tried another battery with the same results. I have tested the batteries and both check ok.
Should I be getting better results? I don't think I am overloaded except I do have a battery in the front for an electric anchor and I do carry another battery as a spare.
Thanks in advance.