Both the splitshot rig and the tube bait are terrific for catching finicky bass.  Put the two together, and BAM! 

 

Here's how to fish it.

 

http://www.bassresource.com/bass-fishing-videos/splitshot-mojo-tube.html

If I used greater than 6 pound test w/o current present would it affect my bites significantly? Worried about line breaking throwing it around cover when I hook into a giant.

Man ... my "secret" is out.  Since watching a video on a Mojo 3 years ago I put a gitzit tube on.  Works wonders up north through the grass.  LOL

What size weight do you guys like for summertime grass?  

What size weight do you guys like for summertime grass?

As Glenn stated 1/8 oz. is where to start. Up the size based on depth. Keep it light enough to "glide" through the weeds rather than sink through if that makes sense.

I have been using 1/8oz all summer at depths varying from 5 to 20 feet, and haven't yet felt a pressing need to change to anything lighter or heavier.

 

I love this rig -- I grew up fishing a river for channel cats with live bait on a splitshot rig (with actual splitshot); caught all kinds of stuff with it, including my first ever bass, a smallie, on it. So the mojo version feels very intuitive to me.

 

One problem we often had with the old splitshot rig was fish swallowing the hook. I used to think that was just the live bait, and probably was, to an extent. But my first couple times I tried the cylindrical-weight mojo rig with plastic baits, I noticed the fish were still getting very deep-hooked.  I realized this might be because the weight was pegged, and maybe fish were taking the bait but not moving the weight, and I would only feel the strike when the weight moved. So I changed it to a "slip shot", with the weight freely-sliding ahead of a rubber bobber stop --I can now feel fish pull on the line even if they don't move the weight. And that has seemed to fix the problem for the most part.

 

So here's my question: Is there a reason to peg the weight itself instead of letting it slide freely ahead of a stopper?

Another great video.