Steven,I'm going to speak freely. A ISL is not for every one especially a very limited one industry ISL..Even I would need to rethink building a limited switching ISL and I been building them since the 60s.
Here's why.
First and foremost you must fully enjoy switching cars if you don't enjoy this facet of the hobby then why bother? You will become bored within days.
Don't feel bad even some veteran modelers find switching boring.
Larry
Conductor.
Summerset Ry.
"Stay Alert, Don't get hurt Safety First!"