I will be installing a couple of Gil sea strainers on the boat,I am trying to get some tips on where to install them,do I want to keep them low?can I install them higher then the hose on the transom plate?

how about the fittings/elbows is that something I need to get from a marine place or can I get fittings from a local hardware store?

its kind of tight where I will be installing them,if anyone has pictures of their sea strainers and can post them,it would be great.