Scoutnut: Actually ASM's can be on (E)BOR's just like they are also allowed to be serving as committee members. According to the policy the Scout's Scoutmaster and any and all relatives are not allowed to serve on the EBOR. The Scoutmaster can attend the (E)BOR but only as an information source for the Board meaning the board can ask him/her questions about the scout. So a Scoutmaster that is unrelated to the Scout and is from another troop can also serve on the EBOR and any other BOR.
For the OP:
Well you always have the Scout Spirit requirement unless it's already signed off. I am