Is This a Joke?

I would never use it when backpacking, but when I'm doing geology, this is pretty much the standard book. Many professionals who do all weather field work use these.

It's really great when you have important data to keep. If you just need to keep your personal thoughts, you could take along a few pieces of paper in a ziplock bag. If you have to actually be writing in wet conditions (it is rare to be out in a heavy rain, but if there is simply a mist or sprinkle, work will go on), you want rite in rain.

I buy the 4 5/8 x 7 1/4 RitR spiral pad, take it apart, and cut the pages in half. I then use one "mini-page" per trip, aggregating all notes in one place.

I typically use one side for "need to change" items and the other for casual observations. Over time my "needs" list is shrinking and my "observations" are growing.

RitR paper is very durable and takes a lot of abuse. I use a UltraFine Sharpie, and the combination makes for indestructible record keeping, even in wet/super-humid conditions.

I also use the small spiral bound rite in the rain one, also remove pages (little better than half)- this w/ a fine tip sharpie only weighs 1.5 oz I find it very useful journaling- how much water used, boil times, ideas on what can go (what stays), what I'm missing, quality of the meals, notes on times/miles traveled, trail conditions, etc

but also use it for more esoteric thoughts :)

Those things were worth their weight in gold while I was in the Army.