To my knowledge the sub-type of SUL explained in this thread did not exist until now, and as such, I am its creator/founder. Thus, the guidelines you can either accept or reject, but I hope they will be inspiring/fun/useful to you, and I am open to any feedback or recommendations. Or you can always come up with your own sub-type of lightweight backpacking ;)
I propose a new type of lightweight backpacking: Bushcraft Extreme Ultralight (BXUL).
Base weight goal: under 1kg (2.2lbs), and base weight must include any items carried (everything but the clothing on your back).
The metric weight goals are in honor of two modern pioneers of bushcraft, Ray Mears (from the UK, uses metric weights on his website) and Mors Kochanski (from Canada, another metric nation). Also, I live in Sweden and I am the creator/founder of BXUL. Go metric!
Next BXUL guideline: No shelter in base weight (including bivy sacks). If shelter is needed (could just sleep under the stars), must sleep in a natural shelter (e.g. cave, under large tree, under cliff overhang, etc.) or build a shelter using all or mostly natural materials (e.g. debris hut, lean-to, teepee, etc.) AND following LNT laws of given location.
Naturally, BXUL has some pretty serious limitations, the most obvious being that it can probably only be pulled off in the summer (maybe early fall and late spring) or in warm climates. It also assumes that there is natural fuel and shelter (or materials for shelter) available.
Possible gear list:
Mora knife/sheath - 143g
Space blanket - 50g
Garbage bags (2) - 84g
Mess kit (Ti pot, foil lid, plastic mug, plastic spoon) - 141g
FAK w/sewing kit and mini bic - 99g
Survival/hygiene kit (LED flashlight, batteries, string, whistle, firesteel, candle, pen, paper, duct tape, toothbrush, toothpaste, biodegradable soap, towel, bug repellant, lip balm/sunblock SPF 30, plastic bag) - 276g
Head net - 30g
Plastic rope - 30g
Rain poncho (El Cheapo thin plastic)- 50g
Food stuff sack - 20g
Water bottle - 25g
Nylon gym bag - 78g
TOTAL BASE GEAR - 996g
The two garbage bags are for a roof should I build an improvised natural shelter, and for a ground cover over natural ground insulation.
I may be able to test this out next weekend. Anyone else down?