Michael,
>>Is it really more expensive to find Scout appropriate packs and bags that are less than 3 lbs (you list each at 3-4 lbs)?
+ Most scouts (and scouters) carry huge packs with lots of straps, zippers, and pockets. For weekend BP trips 2500 – 3500 cu.in. (40-57 L) is a good size for most boys; 3500-4500 cu.in. (57-75 L) is a good size for larger boys and adults. Some women's packs fit smaller boys better than men's packs. I carry a Gossamer Gear Mariposa Plus (17 oz), but believe it’s too fragile for kid use. GoLite makes a number of packs under three pounds. Every scout family has a different budget, but there are plenty of packs on the market that balance weight and features.
>> I never realized the "avg" bag was so heavy
– The North Face Cat’s Meow (-6C/+20) is close to ideal for scout backpacking. The model has been around for more than 25 years. For about the cost of a typical hotel room you get a great synthetic bag at just 1.2kg (2lb 10oz) with a storage bag and compression sack that can be stuffed small (14 L / 8” x 17”). As you know, down bags pack small and light with superior insulating ability. But they are expensive and a luxury for most scouts. There are also some new hybrid bags that combine synthetic and down fill and break the 3-pound barrier. If it’s in your budget, I’d have a 3-season (-4/+25F) synthetic bag for spring/summer/fall and a (-10C/+15F) down bag for winter camping. Scouts can easily press another 3C/5F from any bag by sleeping in thermals or fleece.
>>Tent/tarp weight 3.8 lbs
– We try our best to keep the tent elements together. If we split up the rain fly, body, poles, etc. we have a heck of a time getting things back together before the next campout. One scout may carry the 8-pound tent for his patrol and little, if any, additional patrol food or gear.
>>What do your Scouts/Scouters typically do for rain gear?
+ Some scouts wear rain pants with a poncho, but a rain suit is preferable to a poncho because it serves as windproof layer. Ponchos are hard to control in a windy rain and act like a sail on a float trip. Rain suits cost a little bit more. The Red Ledge (a.k.a. Red Head) rain suit isn’t long on features, but it’s light, packs small, moderately breathable, quite suitable for scouts, and not too expensive ($25 – $50 online). The Marmot Precip is a good rainsuit for around $100 and has features like pit zips, and vents. Frog Togs are certainly light (perforated Tyvek), but I find they snag easily on outdoor surfaces (brush, rock, trees). You can spend a lot more.
>>Clean Stream Filter? What is your backup if it fails?
+ We started using the Platypus Clean Stream on our last campout. We bought the replacement filter ($35) rather than the entire system and found some collapsible plastic water boxes with nozzles that neatly and snugly accommodate the O-ring attachments and tubing from standard hydration bladders. This permits us to filter 20L (5 gal) in about 30 minutes. The whole kit weighs about 500g (1.1 lb). Carry a second filter as backup.
>>It seems you're missing at least map and whistle from your "essentials".
+ Topo maps are a given on every trip; we never go anywhere without a local map. Whistles are an annoyance, as younger scouts tend to over use them. We don’t trek in groups larger than 10 (Parks Canada policy), strictly adhere to the buddy system in bear country, and don’t ever split up. As a rule, everyone stays within earshot.
>>Recognition for those who beat the target or whoever has the lowest base weight?
+ Most definitely….this can be as simple as being first inline for chow.