Longest casting Bass lures?

At Jacob's Creek, there's a large shallow section along the road that holds quite a few Bass.  I can usually get a few within the casting distance of a worm or small spinnerbait...but they are usually active about 50' further out than I can cast.

I'm using 5' or 5'-6" ultralight rods, 4lb test.  Without going to a 7' rod (right now, I have enough rods)...are there any longer casting lures that have hit the market lately to get some extra distance that I probably don't know about?

Thanks for any input.

Carolina rig makes that much difference in casting distance?  

i make mine ,get a heavy but a small swimbait 8 9 an 10 in. work but ,you  do a lot of casting trust me i know.

It's not the carolina rig that make the casting distance, it's the ability to use a lot of weight (for greater casts') without sacraficing lure performance.

Anything at the end of Mr. Slickfish's line.

Then use braided line or fireline

"And that will do what, to change the action of an ultra-light?"
 
^ What he said.  It's just like building a hot rod, you get a bigger engine, you better get bigger brakes, tires, tranny, etc.  Putting heavier braid on an ultralight to throw heavier lures is just going to stress the rod with minimal return in actual peformance.  I know you're not looking at getting a new rod, but St. Croix makes some 7'-7'6" ML rods that would probably fulfill your wishes.
 
Sub

Right, not looking for a new setup, I have 3 UL's a medium 7'er and some casting set ups.  I don't fish this place enough to warrant another set up.  I prefer UL, but I will try my medium weight setup and the heavier weighted Carolina rig to see if I can get out there.  Hell, I can switch to my lighter surf gear and really fling it out there...just wouldn't be much fun bringing them in.

We've all come across lures that cast much better than others...I was wondering is anyone had found something like that that would work with an UL setup.  Probably an extreme long shot to get another ~50' from an UL setup.

Good 'ol 5 inch yamamoto senko will absolutely fly a country mile with 4lb test.