I like the Dacron that Dewdrop uses. Do as he suggests and you will not have any problems. I use it on my 9' crappie pole with 2# test Fireline with no issues. I also use it on 6# test Fireline for suspending Senkos under the same bobber for smallmouth bass. Been using them for decades with no problems. I'd just recommend that you use two pliers to pull the knot tight on each end. Then trim as he said and you'll be golden.
"A voyage in search of knowledge need never abandon the spirit of adventure."