3.5-4 is about the perfect size with 5's making a occasional appearance. I use split shot and rig it just like i would any other float fishing setup.
16-24 inch leader with big split shot to smallest. I had Rob at R&B paint me up a ton of blades and they rock... White with pink dot and hot pink with charteuse tail are the chit. Ill put up a pic later.
You hardly loose anything and its effective. As said before. Go to the Vedder and youll see tons of pin setups with blades under floats.