I prefer fly rods, but for a little variety at high lakes, I have a lightweight spinning rod that's sold/auctioned on eBay by Cooks of Oregon. Cooks mostly makes nice custom lightweight fly rods, some of which can be broken down to 4 pieces. But they also make a few ultralight spinning rods. The spinning rod that I bought from Cooks is a Forecast RX6 Graphite (SB720-4) that's 6' long, designed for 4#-8# line.
I chose the above rod because it's pretty light at 3.10 oz and breaks down to 4 pieces that easily fit a 20"x2" tube.
The current eBay listing for the above spinning rod is:
Cook's didn't provide a tube for the spinning rod, but BPL sells good lightweight tubes in 24" and 36" lengths, which can be cut down to fit the rod you have. When cut to 20" length, the 2" wide version has a weight of about 3.58 oz.
For the above rod, I have a Pflueger 4410 Microspin UL Spinning Reel from Cabella's. It weighs 5.89 ounces w/o line, a little lighter than the 6 oz weight described at the Cabella website. Cabella's listing of this reel can be found at the following link:
Price of the rod on eBay: Starting bid $109; Buy Now $119
Price of the reel at Cabella's: $24.99
Price of BPL's 24" x 2" rod tube: $12.74 (member price)
If you ever consider giving flyfishing a try on trips into the backcountry, might check Cook's eBay listings for a lightweight fly rod that's reasonably priced. Their 6'6" 2 wt fly rod breaks down to 4 pieces, weighs 2.4 oz, and fits a 21" x 1.5" BPL rod tube. Abel's Trout series fly reel which weighs 3.9 oz w/line (the TRL version) matches the above 2 wt fly rod nicely, as does Ross' Colorado #0 reel (weighing 3.4 oz w/o line). Both of these reels have been discontinued but can be found on eBay or maybe on a dusty shelf in a fly shop.