For the price of an Edge 830 also look at the Hammerhead Karoo 2. Same $400, bigger and better screen. If you have an older device, they *might* trade it and give a substantial discount on a new K2. Better screen than an 830, especially if you've created a route to navigate. Having used multiple Garmins (and still use a 1030) as well as K2, the Karoo map screen is superior.
In general, the units are agnostic to what transportation device they are used on, equally happy in a car or a kayak. The recorded track would obviously show avg. speed of 55 instead of 15, but who cares ?.
Battery life is better on a Garmin, but you can USB a battery stick (or cigarette outlet) and run a device that way.
One thought though is get a cheap Android with a big screen and waterproof case. Buy it used if possible. Run it off USB power, don't do a cell plan, run Gaia GPS mapping software. Get a QuadLock mount. Gaia has great maps you can download to the device, allows routing like a cycling unit and is a very popular software of the overlanding community,
Last edited by Steve B.; 12-12-21 at 05:38 PM.