Yes, I think simple is best, the strainer ideas, especially
DIY simple strainer would be preferable, as that way you can modify as required. My shower drains into one of the
bilge areas and is pumped out by one of several
bilge pumps. However after looking at a few of those simple strainer solutions, I may add one. Stuffing around with a whole pump system for shower hair to my mind is a waste of time,
money and practicality.
Not required for myself, as I am follicly challenged, however I am sure it would be handy when guests are aboard.