I'm afraid I don't remember Link trainers at Wolters, but that doesn't mean much; sometimes I can't remember what I had for breakfast, either. I was there some time before you, so it may be a faulty memory (highly possible) or the Army made changes.
The OH-13 was fully instrumented and we did, indeed, fly under the hood. We had ADF, VOR, ILS capability for navigation/instrument flying. However, the preferred instrument approach to landing was the GCA. We practiced GCA approaches an awful lot.
I thought I'd never master instrument flying, but after a while, I gained confidence in my skills and, more importantly, in the instruments themselves. While a "tactical ticket" was not a true "instrument rating" it sure came in handy later on.