Ed, you can minimise the problems by using wild card alerts when you know you will be doing a mix of summits.
In the alert set the summit ref to W6/NS-??? and this is what is spotted. People will need to ask you the ref and then, hopefully, someone will spot the actual summit ref.
To make sure that people know you are attempting multiple summits, put all the refs in the comment and add the command to make RBN spot you for longer after it first hears you, say 10 hours
e.g. "will try W6/NS-039, NS-210 & NS-392 S+10"