If you are in the left corner... then you are likely on PORT... Many of the Spin boats coming out of the blue at you are on STARBOARD....You need to stay clear.

When you are on port and leeward of a port spin boat... you need to sail your course and make lots of noise until you know you are seen..... and then sail your course...

If you chicken out and get intimidated... the spin boat will not know where the hell your steering will take you next and you will be lucky to miss each other and you would be in the wrong.