Does this work?

No conversion (10% cap gains tax in taxable)				
	Start	 End	  Tax	 Total
IRA	 $10,000 $20,000 $4,800  $15,200 
Taxable	 $2,400  $4,800  $480 	 $4,320 
Total	 $12,400         $5,280  $19,520 
				
Convert				
	Start	 End	 Tax	 Total
IRA	 $10,000 $20,000 $-   	 $20,000 
Taxable	 $2,400  $-   	 $2,400 	
Total	 $12,400 $2,400 	 $20,000