Fished Chopaka again on the 13th, this time with my dad. We camped out the night before and hit the lake about 8am hoping for an early bite that we never picked up fishing damsel nymphs/leeches off sinking lines and bloodworms/chiro's under indicators in the south end of the lake. I finally picked up my one and only fish on the sinking line which took a damsel in about 4ft of water in the far south end's eastern corner. There was little surface activity, though damsels were already starting to appear by 9am and gradually increase in numbers as the day wore on. The biggest factor I believe were the increased water temps, which to the touch felt like they were in the low 70s, far from ideal for bows.... The fish were still there in the southern end and spread out from both corners extending up the eastern shoreline, but certainly not the numbers I experienced a week earlier. The most challenging aspect was the failure to pick up a subsurface bite, which never materialized. With the exception of a few damsels, very little turned up in the throat samples I took from multiple fish that I brought to the net. As the day progressed, we did pick up a bite from those fish looking for adult damsels at the surface, wihch seemed to be the only active fish we could locate. About a 1/3 of the activity and concentration of fish I encountered a week prior, but still enough surface feeding trout to keep the day interesting, though you had to work hard for the three or four fish per hour we were able to get during the peak of the action. Surface feeders were very inconsistent and spread out and like before, you could not blind cast to a likely looking spot and wait for a trout to take your fly. Really had to be observant and keep your head on a swivel to locate the "sippers" who often would leave a barely perceptible surface disruption. To add to the challenge many of the surface feeders would rise one time and that would be it as opposed to feeding at the surface numerous times in "rythmic sucession" if you will. So not only did you have to be very patient and observant to locate these fish, you also needed to be in the right place at the right time to get the fly to them when they were looking up. This meant moving to the fish with stealth and hoping that you might find a pod of fish feeding at the surface wtih some consistency, which thankfully we did, albeit those opportunities were brief and random. Nothing like a week prior, which I attribute to the change in water temps... Nevertheless, we were able to get some very nice fish on the surface fishing blue damsel adult patterns flush in the surface. My dad was struggling a bit to get the hang of this type of fishing. He did get broken off by a nice fish, but the highlight of the day came a short while later. I was near him just watching the water and he had cast his fly directly in front of his pontoon when a nice trout sipped an adult damsel about 30 ft to his left. He did not see the rise, but I saw it and let him know. Immediately he turns and lays out a perfect cast within a foot or two of where the trout rose and within seconds his fly disappears and he is fast to a fish. Ends up landing it and brings to hand a nice 18" bow. Allt in all, given the conditions, it was a good day on the water. 2-3 fish per hour on average over a 6-7 hour day on the water- all on dries. Even made a brief trip to the far north end where there were even fewer fish in the shoal but was able to find some willing players tight to the bank sipping adult damsels. All fish were still healthy and strong, but water temps suggest is probably time to shut things down on Chopaka until it cools again in the fall.