i'm good at broken english.. all the bier
ok.. i like a new challenge.
to try to visualize what you want... (sla flag):
and after impact the flag changes to... (racs flag in this example):
if so.. a couple of things are needed:
1. a way to attach the flag to the boat and keep it moving in real time with the boat.
2. the boat needs an 'event handler' for the 'hit' in order to fire off the "change_flag_texture.sqf"
this is as far as i can take you.