I have a confession. I didn’t see “The River Why,” despite the claim that fly fishermen would flock to see Amber Heard’s décolletage the movie and that I can be a bit distracted by most things that entail fly fishing.

Sometimes it’s all about presentation. Doing everything, just so, being subtle, to sneak up on your quarry. Too many false casts or slapping the water will draw initial interest, but soon desensitize those who you most want interested in your offering. The same can be said of the latest and greatest fly fishing film; long before it’s screening in my neighborhood, I reach saturation through trailers and highlight reels, and articles and blog posts.

Subtly is lost in the clamoring for attention. There a lack of attention to presentation; something done well will have the fish audience wanting what you have to offer. Regardless of the effort, it can all boil down to that presentation.

There’s the stumbling through the muddled, pre-dawn darkness and the tentative stride, the missteps on mossy rocks. Stooped in a half effort to conceal my profile, I’ll select a fly. The selection is a combination of a modest understanding of entomology and gut feeling. And not every cast, particularly that first cast of the day, will offer the perfect presentation of the fly du jour. It takes me some time to work up to even a decent cast.

My first cast, tinged with too much expectation, sets the fly down too far away. I judge subsequent casts unacceptable or unworkable long before my line falls to the water. Often, it’s too long since I last wet a fly; but slowly, and with effort, a rhythm is rediscovered and precision returns. (Admittedly, my version of “precision” is plus or minus eight or nine inches or so.) Once again, a renewed focus on my cast displaces all that comes with everyday life.

That (almost) perfect always seems to sneak up on me; perhaps the result of not thinking about what’s being attempted. Simply, it feels right. The fly settles on that one current seam suspected to be a conveyer belt delivering bugs to an as-yet unseen trout.

The fly slips downstream, held steady by hope. A nose emerges. The fly disappears. Often, I’m more surprised than the trout.

That’s a bit how I feel about the trailer for “Salmon Fishing in The Yemen,” a movie based on the book by Paul Torday. It snuck up and surprised me with its upbeat hopefulness. Unlike “The River Why,” it was bandied about as the next version of “A River Runs Through It.”

“Salmon Fishing in The Yemen” has some star power and apparently some respect on the independent film tour, and seemingly is without the focus-group formulation that sucks the soul out of anything. There’ll be no admission to somewhat of a man crush on Ewan McGregor. See “Long Way Round” and you’ll understand — he comes across as a guy who’d saddle up the adventure bike for a day of fly fishing, followed by a friendly evening at the local pub.

Though always risky, judging by the trailer, the plot of “Salmon Fishing in The Yemen” echoes the hopefulness that’s all too often required of fly fishing without directly being a film about fly fishing. It’s got Mr. McGregor (as the fisheries biologist hired by a fly fishing-obsessed Yemeni sheikh to bring salmon to the wadis of the Yemen), Emily Blunt (as the Sheikh’s representative), Kristin Scott Thomas (as a British government spokesperson promoting the project to draw attention away from the government’s latest blunder), salmon, English charm and wit, and fly fishing. While it might benefit from a more mainstream title, I like the title; it’s likely to keep the riffraff out of the showing you know I’ll attend.

It’s nice to have a fly fishing flick to look forward to while waiting for Ms. Olive (the Woolly Bugger) to make it to the big screen.