I may need a 4hp engine, do any offer electric start in about this size range?
This. I've got the 2014 4 stroke version of this motor and my 11 year old can start it (and carry it) without issue. It's got pretty high compression, so it's best to pull the cord like you mean it but it doesn't require a lot of strength.SWMBO hated our old yamaha no- recoil- point-and-shoot 2 stroke. She hated the process of choke, throttle speed, wrap-and-rip, try again, try again, try again... so, it had to go. Last season we got a great deal on a 2006 suzuki 4 stroke 2.5 hp. Small, quiet, fuel efficient, most importantly, light- less than 30 lbs (their 4 is essentially the same size,and only about 4-5 lbs heavier.) It starts first pull, runs for an hour on the built-in- tank, and twist grip throttle rather than the "dimmer switch" throttle on the motor housing, and most importantly, has neutral- no more point and shoot.
The previous owner had one, and also a 6HP engine. He recommended the torquedo too. Will have to wait until I find one used for a good price. I can charge from solar too, so that will be a plus.I think the Torqeedo is really worth a look, I believe you have a generator so charging it should be trivial. They are a bit more than a gas motor, but if you can get away without having to have gasoline, all the better. Many people under estimate the dangers of gasoline, especially when it is just for an outboard. You likely have no properly vented compartments to store it in, and the fumes are both explosive and poisonous. It has such a short shelf life as well. Seems if you are looking for a small outboard the electric ones will be sufficient in power and there is no starting required. I am also curious about the Lehr propane powered outboards, as you likely will have a vented locker for that, or it is easy enough to install a PVC tube with a drain out the bottom to let any gas escape overboard.
These work well, and you could even perhaps get a couple of Lithium motorcycle batteries to power it. Like the one here (they start at about $80)I was reading the site, and the travel 1003 puts out 68# of thrust, why not just buy this:
MotorGuide R3 Saltwater Transom-Mount Trolling Motor | Bass Pro Shops
with 55# of thrust? Or something like it?
would it be just as fast, ect?