Injection sites for bolus

I'm on a pump but when on MDI, I used my thighs for boluses. I've also used my arms but that's trickier and I found I bruised more.

 

I use arms -- they are a bit tricky in terms of "pinching" an inch prior to injecting
but if you are using shorter needles ( 4mm ) it shouldn't be an issue

 

I always find thighs slower to absorb -- it is a bit of trial and error
I would start with injecting 5 minutes before meal and work outwards from there until you get that lovely medium of no hypo and not a big spike ( easier said in writing than in practise )
and after 44 years I have had a lot of practise

 

Yep, I agree with @himtoo Start 5 mins in advance and if that's not early enough, move to 10 mins, etc.

I find my thigh absorb insulin quite quickly, but then I never sit still : D

 

You could use the back of your arms, if you raise the arm up slightly and come in underneath with the pen it makes it easier to inject there, also I believe the absorption rate is slightly faster in the arms than the legs but still lags behind the stomach as your already aware .