I never tried a slip bobber and probably never will on the FNF. My guess is that a tiny 1/16 or even smaller 1/32 oz jig would not be heavy enough to pull your line thru the bobber. But if you are using a large enough creek chub or whatever then it may be heavy enough to pull the line thru. Another reason I use the doctored up foam weighted bobber, is that it will let you know when you are on bottom or when a fish has come up from underneath and took the jig by laying on its side. This is very important information to know for with the bottom weighted bobber, you will not have a clue if your jig is on bottom or in a fishes mouth because it stands up no matter what. Line size does play a big part in catching reluctant biting fish in gin clear water especially this time of year. Using a 7' rod with 8lb test may work but I don't think you will get as many bites. I use 6lb to start the FNF season usually as the water drops below 53 or so and will move down to 4lb test as the bite grows tougher, ususally as the water temp drops in the lower 40's or below. I need my 10 FNF rod to really take all the stress off the smaller test line so the BIGUNS don't snap it like thread. With a 7' rod and light line, my guess is that you will break off more than you will boat. All of these are just my opinion. You can get a decent FNF rod for $50. I started with a Silstar 9' rod which I got from punisher for $49 and it worked great until the last trip when I stepped on it and broke it in half. I moved up slightly to an All Pro 10' rod which I love even more. Hope this helps.

Tight Lines