2019 Kodiak water in wheel well

I sealed the couple gaps I found with Great Stuff Black which is designed for ponds and other outdoor environments that will come in contact with standing water and create a watertight seal (I've used it in my basement to seal a gap around a copper pipe and it's held up great). After letting it set for a few days as a precaution, I poured water over it and initially thought all was good. Then I tried every other location where the spray foam was and realized it's not even close to a sealed gap. In some places, they put the spray foam on the outside of the metal fender well meaning it actually captures water running down the side and forces it inside.



So it appears I have a few choices.

1. Reseal the fender with silicon and walk away covering my ears repeating "nanananana"
2. Replace the silicon with Proflex and cross my fingers
3. Reinstall the plastic fender flare with a bead of butyl tape
4. Find a product to cap seal the spray foam/gap (undercoating, rubber spray, etc)
5. Cut out all the spray foam and install Great Stuff Black

Although I'm really tempted to try option 5, I suspect that's not going to be realistic to actually seal things. My best bet I think is to use butyl tape, but there isn't a lot of edge to work with so I'm not sure it will work.



I guess I'll do that first and if it appears it won't hold a seal, I'll fall back to Proflex. I find this an asinine design to be the standard!