Airmar M260

[Hooper]

I got my unit yesterday, what is the best way to obtain the proper deadrise angle to cut that box and what tool is best to cut that box?

I read the instructions that show to invert the box and use a carpenter's level to ensure it is level, then mark a line, but space is limited in our boats, I don't see how I will do that trick. My thought is to take ths box, lay a level across the top, press them against the outside of the transom and mark my angle that way.

Same angle right? Just taken outside the boat rather that in the bilge and since I will be placing it just forward of the transom anyway, I think this method would be fine.... what say you all?

As far as a tool goes, I am going to look at this thing and give it some thought right now....