Do some research on drop set training. This training method is bar far my choice when i need to work on a lagging body part or am trying to improva an area of concern. Your strength gains using this technique will not be good, you may even lose a bit of strength however for true muscle building movements drop sets is superior.

The other secret you can try is the day you work arms and the day following take in an additonal 500 calories and 50 grams of protein. Easy to do, just take an extra shake or meal.