Can you run 2 drive showers, an imco top and a simrek? or is this just plain DUMB? I just thought it would be even better protection running both.

The pick ups would probably interfere

The only way I could see that working, would be if you used the simrek as normal, and plumbed your other drive to another source. A line from your sea water pump in the boat, or through a low water pick up etc.

What shower is best ? I hear simreck is best.

Why not try or look at an Innovative Marine drive shower?http://www.innovativemarine.net/
I put them on my cat...the fresh water --- throught -- the hull type..nothing but ice cold water from start-up to shut down
If you need pics of mine let me know

I can't give you an accurate answer as to which is best, but I can say that I am very happy with the Halo I bought from Paul Kermis on this board, and I thought he was having another special going on.

Les