Some folks love gadgets, but I have two criteria for gadgets... they have to be reliable and they need to be practical. The gals and I have found a lot of reliable and practical gadgets over the years for our camping, motorcycling, prepping, shooting, and other activities made by Nite Ize.
A while back, I ran across a new product from Nite Ize called the CamJam Cord Tightener at the local Tractor Supply Company store. This handy little gadget works quicker and easier than several other Nite Ize products and small carbiner products I've tried. It doesn't involve any knot tying which is great in cold weather when you have gloves on or your fingers are too cold to feel anything, much less loosen and tie a good slip knot or square knot.
I used a couple of these to secure our deer blind to some stakes and small trees this winter and they held up well out in the weather for over over a month. They work with everything from paracord to light rope. They're not rated for any kind of weight-bearing use by tactical ninjas, but they are quick to adjust, tighten, and release with your flies, tarps, tents, and other tie-down needs. They would make a great addition to any gear bag, BOB, or GHB. If you pick up a couple these CamJams... you'll find endless uses for them.
Go ahead and try it... and if you don't like it, you're out... like... five-bucks.