So I pursued this question a little further and discovered that Clenow came out with an updated edition of his trendfollowing book just this year. I've started reading it and it appears to be exactly what I was looking for to try to understand where this approach is at right now.
The foreward was written by Jerry Parker and a portion of it is shown below. The emphasis placed on the words trend-following is mine.
Excerpt:
“….. Books like
Following the Trend were hard to find back in those days but I was on a hunt and I would not be denied a place in the
trend‐following world. When I got my big opportunity to work for Richard Dennis, I was ready. Well, at least I thought I was ready. I had a lot to learn and they were the best teachers, real geniuses. I learned that the best trend‐following rules are not complex and they are not overly optimized. The best trend‐following systems have only a few rules. I have been tempted over the years to make my system more complex but that has only resulted in fewer profits and me having to revert back to the basic rules of trend following that make sure you never miss a big trade and that you continually and, in all situations, limit the losses to a small percentage of your AUM. “Keep it simple” really does work better than complexity.
..…The best traders that I have known play for the big trends, let profits run, take small losses, and trade many markets, both long and short. Diversification is one of the not‐so‐secret secrets of success. I started out trading 20 markets, I now trade over 200 markets. Successful systematic traders must have dogged consistency and discipline. The best traders do every trade, regardless of the recent losses and drawdowns. It takes practice and a commitment to your system. My only regret in trading has been when I haven't followed my system the way I should have. Enjoy this book as I did and revisit it over the coming years to be reminded of how basic and powerful
trend following is. The trend is truly your friend!”
Jerry Parker
CEO, Chesapeake Capital
The book:
Clenow, Andreas F.. Following the Trend: Diversified Managed Futures Trading (Wiley Trading) (p. xii). Wiley. Kindle Edition.
Edit: fixed the link