I use the hard-plastic, adjustable bracket that comes with the unit. I've attached a 1x4 piece of wood onto the side of my frame, using cable-tie straps. The bracket mounts onto the wood piece nicely. This allows me to drop the Fishin' Buddy in & out as required, in a fixed, vertical position. As Dave ('Swampy') stated, though, you pretty much have to pull the unit out when rowing, cuz it starts 'bouncing' against the water resistance when you get up to speed.

You can't beat the portability with it needing only 3 'C' batteries, though. I have the '2250' model from a year or two ago, which is a great improvement over the lesser units, which have a much lower 'vertical pixel' count (i.e., poorer resolution). Works fine for me!

(p.s. Also, you **CAN** adjust the sensitivity on the 2250!)