assuming you have a basic, working knowledge of where trout hold in streams, and how they are 'opportunistic' feeders by n large...here is all u need in Desolation area streams, from any shop w/ fly fishing gear:
a 9 ft. tapered leader with 4x tippet
a handful of flies size 14 - black ants, prince nymphs, yellow humpies
tie the leader to a 7-10 ft willow or other stick, and drop the fly near the hungry trout, and yer in biz.
for the lakes you will want a longer line, so tying the leader to a 10-15' piece of 10 lb test line first would work, and a little split shot for casting weight. in shallow mtn lakes, most feeding takes place along the shorelines.
using flies which imitate trout food assumes that you're not inclined to spend hours trying to catch grasshoppers & the like ;)
if you are, then bring bare hooks.
Wow Mark i must say i am intrigued by the sub $10 tenkara knockoffs you found...