No offense taken, Les ..... except my screen name is CRAPPIEpappy (not Crappy pappy) LOL !!!

It was not my intention to persuade anyone to not purchase a SI or DI unit, nor where to put it. I just wanted to put out a little friendly warning that there would/could be issues to contend with. Glad to see that you have overcome those issues & made your SI unit work for you, where you chose to put it.
I, too, have begun to overcome the skewed image problem from my DI unit being mounted on the TM. I just didn't know all that much about DI units, when I purchased it, and went thru a period of doubting whether or not I'd made a wise choice. The more I get to use it, and the more I understand how it works & how to work it ... the less doubt I'm having. I just wanted to make sure that the "possibilities" of issues, from lack of knowledge of those issues, did not deter the purchase or placement of the unit ... without careful consideration by the purchaser.
I have no working experience with an SI unit ... and was just repeating what I've heard from owners of SI units that are members of another website that I happen to be a member of, and trust to give me the skinny on them. Obviously there are ways to overcome any issues, with ingenuity or a make do attitude ... and many of my fellow Crappie anglers are using their SI units on the TM, as well. It's just that a majority of them preferred to transom mount their units, once the potential issues were brought to light.

Good fishing to you, brother !!

... pappy