Your Water Pocket is a great idea. As for filling the Wanchor, I did the same as you by sloshing it around in the water. What I meant in my previous post was that if needed to be topped up while already set up and hanging (and also if flat and too heavy to carry), then a few potshots would do the trick to achieve the weight necessary. I will talk to Tom and see if he is interested in making them as he makes the Sandtrap. If you see any Red Sandtraps, those were made by a friend of mine who is a professional rigger for the military, so it was to Milspecs. Check out "Sandtrap Sandwich" on Youtube. For those extra long raps. Thanks for the link to Sierra. Will check it out. .....be safe out there.