Loch-style fishing, especially via competition, is definitely worth a try and is a great way to add some slope to one's flyfishing learning curve, especially if you find yourself in need of a good dose of humility. Those who do well at it are excellent anglers and one can learn a lot from them that can be useful when fishing for pleasure. A rich resource of information about competitive flyfishing, including loch-style, is available at http://innovativeflyfisher.com/, and a Google search for loch-style fishing turns up hours of interesting reading material.
Finally, if you'd like to mix it up with some crack competition anglers, note that the 2016 North American Loch-Style Fly Fishing Championships are being held at Tunkwa Lake (site of the 1993 World Flyfishing Championships), Leighton Lake, and Trojan Pond - near the town of Logan Lake, British Columbia on June 5-11. See http://www.flyfishingchampionship.com for more information. Also, the 2016 Canadian National Fly Fishing Championship & Conservation Symposium, which includes loch-style and river competition venues, is being held on October 4-8 in Merritt, British Columbia, an area well known for its acrobatic Kamloops trout. See http://www.2016nffc.com/ for more information.