I caught a 22lb mirror on free-lined boilie fished over a blanket weed bottom to help presentation, using sensor 15lb line/ size 6 hook/ 30 yards out and slack lines got an absolute screamer on my bait-runner set lightest clutch. With 12 freebies around the bait which was 1.5 boilies hair rigged.
Striking straight up I find sets the hook the best, after winding down into the moving fish, a side ways strike seems to result in few hook holds.
Also caught my biggest cat 57lb with no lead weight either
Carp have a knack of throwing leads if your not on them asap.