Re: Fence Post Bases
Abandon wood and composite posts and opt for steel. They will flex with the wind, never rot, and never create termite issue. A brand name to look for is Postmaster, there are other brands too. I like the Z-posts, as the name implies, they are Z shaped to accommodate the thickness of the rails and be flush with the rails, so that you can place a picket over the post and hide it easily.
I too like the idea of composites, however, I'm noticing that some Trex I've used to isolate stair stringers from touching the concrete and wicking moisture/critters is disintegrating after only a few years exposed to the elements. I'm not worried about it in this particular application, but it does go to the integrity of the product when exposed to the elements and stress, it's going to fail, as evidenced by your experience.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!