CR masking when very long tails

[vpicouet]

Hello,
thanks for the very good tool you are providing!
I tried to use astroscrappy for CR masking on an EMCCD on which tails are very long (tens to hundreds of pixels, sometimes several lines).
I did not manage to find a way to mask these tails entirely.
Could you tell me what would be the parameters I should try to tune in order to get rid of them?
Thanks a lot for the help.
I add the link to an image if you are interested:
https://nuage.osupytheas.fr/s/D2ALKby4f4HiYQ4