Nothing going to stick to HDPE, except melted HDPE/LDPE. I've done a fair bit of plastic welding.

I'll be curious how well this patch job lasts.

Here's some bathroom reading material
https://sites.google.com/site/hobbyhintstricksideas/home/beavertail-stealth-2000-keel-repair

Last edited by dla; 12/14/23.