You might even go down to 0,3 mm spring steel, my son has one on his Mono 1 and his mini roundnose and has been warned several times during races, that his aerial was missing...., you can't see it when the boat is moving.

Downloaded the video; nice work! Love the way you slowed the vid down and the B&W section, makes it look very authentic (but for the aerial...)!

Regards, Jan.