I have one, and I really don't like the pendulum action(Fuse Navigator Pendulum).I love the sight, just don't like the pendulum feature, so I lock it down.Maybe it's just the radius of my swing arm that isn't long enough, but it doesn't compensate enough to account for the arrow drop at 25-35 yards, as advertised (except at ridiculous speeds). Mine also rattles like hell if you loosen the set-screw and allow the pendulum to swing (the reason I leave it locked down).

Example 1: I tested it at around 300 fps, 15' high: 15, 20, 25, 30, 35, 40 yards.
At 15-25 - I was dead center in the bull. At 25,it started dropping. At 30, I was a few inches low - and at 40, I was almost the whole way off the target.

Example 2: I tested it with a 250 grain arrow at 365 fps, 15' high: same yardages.
The pendulum swing compensated perfectly to 35 yards. Legitimate one-pin, dead-in-the-bullseye to 35.

The problem for the average guy is that his bow isn't shooting in the 360's. Most guys are in the 200's, and at those speeds, this pendulum will NOT compensate. Obviously, it will compensate a little more as the elevation changes (from 15-25'), but I don't think it will be enough. When I get the opportunity, I will conduct a test from 20'+ off the ground.

Now I'm not saying that ALL pendulums won't compensate right, I'm just saying that THIS PARTICULAR model does NOT compensate at 15', 300 fps. The bow needs to go faster.

Fuse Navigator pendulum




If I was recommending a pendulum for anyone, I'd recommend this one.

Truglo TG701. Brighter pin, quieter design, lockdown feature, slider. These are the features that should matter. Also, it looks like it has a bigger swing radius, which will be the key difference-maker for a slower bow. The fuse that I have is just on too short ofa swing for a slower bow.