Does anyone have any thoughts on whether cup anchors are worth the extra $$$ versus imbedded eye bolts for securing pool ropes and floats in a pool?

I've also seen some type of PVC cup anchors with a stainless steel rod in them. Are these strong enough to stand up under folks hanging on or trying to sit on the rope that is stretched from side to side?

The pool will be a salt water pool and so I'm obviously concerned with the corrosion factor on the metal parts.

Are chrome plated brass parts desirable?

Thank you.