flound how do you find the NVC price? It seems to be off from what I see at BTC-e and Cryptsy ( no volume )
If memory serves me right, the pool uses an average of the bid prices of several exchanges.
Since the pool's reported exchange rate is based on actual bid prices, as long as the volume is high enough, I think it would make sense to take the greatest bid price rather than the average. You only have to sell the coins once.
For example, the NVC order book of BTC-E currently has the following bids:
price NVC BTC
0.06415 20.09797995 1.28928541
0.06351 0.102346 0.00649999
0.06320 179.70753014 11.3575159
Regardless of other exchange sites, the pool should report an exchange rate of at least 0.06320, since you'd be able to sell a fair amount of NVC at that price at the moment. In contrast, it uses the value 0.060831 for profitability calculations right now.