No, I haven't used knot sense for that. I did buy some once, and even bought a little UV flashlight for it, used it once, then promptly lost the glue somewhere and never remember to buy another one.
Turtle grass isn't so bad. The bay grass is very fine grass that's less than 1/10th the width of turtle grass and is a real nuisance. I haven't even fished for bones but 3 good tides since the big freeze killed most of them a couple years ago. There hadn't been any for at least a dozen years prior to the freeze on the flats where I live, and none showed up at a great spot 45 minutes ride west on 3 consecutive good tides after the freeze, so I just quit fishing for them. Reds are now in many of the places where bones used to feed.
Anyhow, I used Rio Permit tapered leaders which are 9 or ten feet tapering to 20 lb test, then I'd add 5 or 6 feet of 12lb fluoro tippet so I only had one knot.
I think the most common ways to spook bones, at least here, (the only place I've ever fished for them) when wade fishing are lining an unseen fish while casting to another one, and casting vertically when they are too close to do it safely - which is anywhere within easy casting range on downtown fish.
They are hyper sensitive to shadows and movement above the waterline, so long shadows when the sun is low is also something to be aware of. Once spooked, even if they don't freak out, chasing them is fruitless.
I have moved up in tippet strength over the years, not down. But then, I started fishing for them later and later in the day as fishing pressure on them has increased. I no longer even bother to start fishing until the guides have all left for the day, because they began changing their habits and not coming into really shallow water tailing until the sun was very low. So to fish under a high sun required a poled skiff to see them.
You will probably be fishing an area like the Keys of the 80's and before, but the sensitivity to motion above the waterline is inbred in the species I think. Probably caused primarily by ancient predators like osprey.
Even one sandpiper will spook a school of them - but unlike a human spook, it's just temporary, like how a sudden noise will cause us to jump, and those fish are still catchable if you can get far enough in front of them and wait for them to come to you (if they do). A human spook, forget it, they are on the lookout for you and will be constantly aware of your location if you are wading.
One of these days, I may get to a remote area and re-live the heyday. Sounds like you are there. I'd really like to hear your take after you get a year's time fishing for them.
Best of luck - they are a great sport fish.