[Route PQ]

We're much newer to this than you, but I built a route and had the same problem, and to fix it (I think) I expanded the search radius and got more hits.

I hope this helps!

[Bushwhacking]

I think it's typically interpreted as "slogging through rough terrain," sometimes with but typically without the aid of a blade. You could substitute the phrase "going off-trail" just as easily. I do not destroy vegetation in my search for a cache. I have had to pick my way through dense patches of thorns, circumnavigate marshes, and make difficult ascents and descents, but I tried to leave no sign of my passing there, so as to leave the challenge and thrill of the search intact for the next cacher.

[Clear waterproof sealant]

I've used it to stick things together (which have yet to come apart), to repair broken items of virtually all materials (ditto on the not-coming-apart), and, of especial interest to the OP, I hope, I've used it to patch holes, and I can attest that after years of exposure to the elements, said holes are still waterproof and the lexel is still unclouded.

 

Ok, NOW I'm sounding like a paid endorser...(maybe I should contact the company).

[Clear waterproof sealant]

I recommend a product called Lexel. It's very affordable, adheres to most any material, retains crystal-clear lucidity, and stretches with the weather. And no, I'm not a paid endorser...

[Geocacher Family Tree?]

I ran into a geocacher family tree website and I can not find it now. You could list who got you into caching and maybe see how it went from Dave to you. I know that a large # of cachers would have to post there for it to work well but hey I did my part! Well any way I wanted to add a link on our website but I can not find it.

Big Daddy D was the first to explain "geocaching" to me. I've logged behind you on several of his caches. I don't know how close he gets to Dave, but he's been in the game for quite a while...