Battle of the thru hull wiring kits...

I bought a cheapo thru-hull wiring kit similar to this one:

https://www.amazon.com/Ezbzyz-EMS-1001-GridLoc-Connections-Accessories/dp/B0DJNCK9DS/

Then I discovered that I had an unused Hobie thru hull wiring thingy. Here are a few pictures and my thoughts on the pros and cons of each.

The first pictures shows the parts that came with the cheapo kit. The second pictures shows how the rubber parts fit inside the ring. Btw, the rubber is surprisingly stiff, making it not so easy to work with. The third picture shows the size of the hole that needs to be drilled--exactly 1".

One weird thing is that the rubber thingies needed to be cut to fit my fishfinder wires thru, as  shown in the 4th picture. The 5th picture shows the wires running through, and it's not a tight fit, so it would certainly leak a bit. Any smaller sized holes would need to be drilled out slightly, which I actually tried, but unless you have exactly the right size drill bit, it'll either still be too tight or it'll be too loose. I only had the right size drill bit for the thinner (transducer) wire. Anyways, that seemed like more of a hassle that it could possibly be worth.

The first picture here shows the Hobie thru hull system. It also requires a 1" hole. The second picture shows the rubber grommet that Hobie uses, and there is a size that's very snug around both wires, ensuring no leaking, as can be seen in the third picture. I ended up going with the Hobie version, as it seems to me to be clearly more leak-proof.

The pros and cons of each? The only pro I can think of for the cheapo Amazon kind is that it's super cheap. In practice, it would probably be OK, but on my AI, there is a lot of splashing, so I want the best leak-proofing  can get. Also, I think it would be much harder to get a good seal all the way around when installing the cheapo version, as it's only held in place by 2 screws, whereas the Hobie version has a screw-on ring on the back side, which puts constant pressure all the way around. Also, the Hobie one does not require any extra holes.

The Hobie version comes with a rubber washer (not shown) that always disintegrates over time, leaving a nasty black residue. So, I'd recommend leaving that washer off, and instead use a bit of Goop in its place, if desired.

One installation trick is that instead of a 1" hole, I drilled a 7/8" hole, and then slowly filed around the hole, until the Hobie thing would just barely thread into the kayak plastic (as opposed to just fitting loosely inside a 1" hole). Then I put a tiny bit of Goop around the threads on the back side. I didn't bother with any Goop on the front side. Based on past experience, I'm confident that this will be waterproof, and that it'll last as long as the kayak itself.