Ok there are some good knots to use here and you will get many opinions on this.
For me, I highly recommend using a
PR knot, Midknot, or using spliced loops. I use
PR knots 99.9% of the time and never had failures with it.
As for fishing BFT in NJ, I would highly reccommend stepping up to a minimum of 65lb main line and 80lb leader. I've landed 100+lb BFT on 65lb, but the last 2 seasons have been using nothing other than 80lb and 100lb. Just food for thought.
Please feel free to ask anything about jigging NJ or BFT, they are my 2 favorite things.