I am building a deck 16' wide and 3/4 around the pool. I need some help solving a couple of problems.

Since there will be angles how do I support the angle where 2 outer rim joists meet? Do I just nail the 2 joists to the 4x4 posts and then box in the post since the 2 joists would not fit flush against the side of the post?

I want the decking to fit flush around the edge of the pool. How do I achieve a clean look around the pool post caps? Remove the caps fit the decking and then some how cut the cap and reattach? I have seen where a jig saw was used but it didn't look clean.

How far apart should I place the 4x4 posts?

Have any pictures showing this stuff is greatly appreciated!!

Thanks
Wade