Any reason...
Not sure if you're asking me or Dave, but I like the siderail location because it allows me to "keep my eyes on the road," sitting in the starboard sternrail seat with a good view forward and over the cabin top. With a tiller extension and a single-handle remote, I can control F-R and speed with my right hand, and steer with my left. The other locations I considered would either require looking down or back when moving forward, or would not be easily reachable from the sternrail seat. I've had no issues with bumping into the remote, with feet or anything else. The only possible downside would be when heeling hard to starboard, it would be awkward sitting on the low side; but hard heeling usually occurs while sailing, not while motoring. I decided against a location near the motorwell partly because I hope to link the motor and tiller someday, and didn't want to chance obstructing the movement of the motorhead. I also let the control cables "loop" in the motorwell so they won't restrict movement when I get around to the other project.