One strategy posted in this forum, Comdoc's Heatmap, is to buy or sell a basket of 10 jpy pairs in one direction and enter opposite trade for 2 usd pairs based on a combination of using the Orest indicator and some technical indicators. Seems to me that if you pick one pair with a low spread that is highly correlated to the jpy pairs and trade 12 times the number of lots, that would be better than entering a trade for each of the 12 pairs because the total spread of 1 pair would be lower and also it would be easier to control the trade of 1 pair vs. 12 pairs. For example, trading 1.2 lots of eurjpy vs. .01 lots for each of the 12 pairs in the basket. If anyone thinks the risk is lower trading the 12 pairs, explain why.