I'm actually the opposite. Might be cause I'm actually scared of the big hairy horrid demon spawn, but eh.
I did this by accident actually. I was walkin around at night makin house plots with my net out like a dumb-dumb. I heard a weird noise, but not thinking it was a summer beast, I walked towards it (I haven't seen any before in the month so I thought maybe it was the wrong month). Anyway, I walked straight at the demon spawn, it looking and hissing right at me because I still had my net out. I quickly switched tools. Seeing it wasn't running and still facing me, I got my net out and slapped down on it (I was already facing in its direction) and BAM the horrid beast is now in the museum.
Another tip is to dedicate a space to force them to spawn. They will not spawn on tiles from QRs or pavement. Cover your town with alot of QRs or just make one area of it to spawn. They can WALK OVER pavement once spawned, but will not appear on pavement.