Re: trolling/kicker motor
I'd be inclined to use the main engine for trolling, and save the effort, weight, space (both on the transom and for its fuel tank) and money for something else. As far as fuel savings it can't be cost effective.
I don't subscribe to the "spare motor" theory for most small recreational boats.
It would be different if you already had the small motor laying around.
HC
Please don't take this the wrong way, but I have always wondered what you (and a few others here) troll for and how much you do it. I ask that because no matter where the person asking the "kicker question" lives, or what they fish for, you say don't buy one. I live in a part of the world where we may troll at very low speeds for some fish, slower than 1 MPH at times, or the motor may just be used to hold your position and not go anywhere, and we may do this for 10 hours a day several times per week.. So there is no way I can troll with my 200hp main on a 19' boat. If you fish the salt off the East coast I can easily see why a kicker isn't needed, the speeds are much higher and it would be an added cost with little reward. In some parts of North America a Kicker is a standard component on any serious fishing boat, even up to the 25’+ range, without it the boat just isn’t versatile enough. I have three different boats set up for different types of fishing and where I live and the kicker can be a very important part of the equation when it comes to a successful trip.
As for a backup in an emergency or something to get back to the dock…that is for each person to decide for themselves. For me I would much rather rely on myself and be able to be under power in seconds or minutes than to wait who for knows how long after making a phone call, and that’s if you get reception and the battery isn’t dead.
Just a few weeks ago we were launching my buddy’s boat on the river, there was no one else there so he started both motor’s (kicker and main) before backing off the trailer and let them warm up for a minute. He shut off the kicker and then backed off the trailer with the main, this part went well and I pulled the trailer out, that’s when the problems started. As he went to put it in forward the shifter went to neutral and the cable broke before going into forward, this left him with no power and drifting quickly towards a log jam near the bank. It only took a few seconds for him to drop the kicker and be under power again. With the speed of the current that day and without the kicker, he would have floated into the log jam and instantly sunk. I can list numerous other instances over the last 45+ years of boating where a kicker either did, or would have, saved the day. So for me a backup source of propulsion is worth it.