Great article.
My good friend in Slovenia has become a bit of an expert on catching these fish on the Sava, and has recently become a 15' double handed (albeit overhead) convert after years of my prodding.
He took many fish last year, including 2 over 100cm, which is a big achievement these days. He developed a couple of effective "flies" (lures really) called the Lunker Snack and The Rat, which are very heavily weighted dressed 6/0 - 8/0 hooks, sometimes in tandem, slung out and worked in deep and very fast undercut channels.
I've yet to break my duck in 3 attempts, having had a couple take and not stick, but I hope to address that this October. I'm hoping that a Skagit and Z19 tip and an unweighted double hooked hucho fly will be successful!
S
PS He also sent me a link last month to an upcoming video of him by a company promoting Fishermen of Slovenia. A film crew followed him round for a day, and he managed to hook and land a big hucho for the camera in the dying minutes! Apparently the fish took when he was fiddling with his running line which had formed a huge knot!