KY, gonna stick in me 2p's worth for what it's worth... probably 2p.
Although the 1mtr separation is the rule, I can't say I've ever had any difficulty seeing or identifying a wee boat with less separation because of the the lack of separation. It needs to be above head height tho.
Your spot lights are silly, a bit harsh sounding but at sea there is nothing for the light to reflect back from as there is on land. The light will bounce off the water and continue on its way shining at the sky. They will totally destroy your night vision, even your instruments will do this unless they dim very low and I mean VERY low. The lights may be useful in harbour if there's no other lighting and as deck lights but rather more light than necessary. They will however frighten the seagulls from the water and preventing you running them down. Seriously.
Your active antenna will not make you a target as big as a tanker but perhaps you were just having fun and being a wee bit facetious.
Don't ask me how I know these things....