JayB--Sounds like a great trip. From a fishing perspective, you were well above Twentymile's best. Unlike many Park streams, the lower section is best. Also, Moore Springs Branch (which should be named a creek, given its size), is fine fishing.
Of course you had your hands full, so catching anything keeper size was an accomplishment.
You gave the youngsters a grand memory, and that is not merely a keeper--it's a trophy.