since I'm here and you are reading sure. my advice for $6.50 is:
>30BI BRM maybe 100? Swings can be huge (trust me I know)
play tight in the early rounds still and let them knock eachother out
play more from position less oop
get >96% ICM trainer for 100 hands, practice it with different situations, especially the bubble.
Adjust your ranges to your opponents (pay attention to their play) so you know if they call loose or push too loose, what your pushing/calling range should be with ICM.
Pay big attention to chipstacks, and mind your pushing range on the bubble.
Don't focus on volume, more on making correct decisions every time.
Review all of your games in SNG Wizard if possible.
p.s. multitablers shouldn't be a problem, there are many at $6.50, not so many of them are very good (they would be at 22$ games I think) since they are usually tight, they are easy to predict and you have an edge if you adjust to them. Usually if there are 3 multitablers, at least 2 of them will be fished away by the bubble - not so bad.