Anyone ever use a sickle mower for an old Ariens GT?

[Jpow]

Hi everyone, this is my first post on TBN. I've lurked around and got lots of useful info here before and decided I should finally sign up. So I'm about to get my second Ariens, another S-16, and it's coming with a 4 foot sickle mower. Has anyone used a set up like this before? Or have any tips for running it efficiently? I've got quite a few spots in our yard with thicker brush and bad angles for my mower deck, so i'm hoping this sickle bar with help out, thanks for any info