I've been using double up on some of my pairs, which would work great, except that often the bot uses up all available BTC (or almost all), leaving insufficient BTC to cover fees to sell. This causes sales/profits to be lost, or triggers further doubling up later because the sale did not occur when it was profitable, which causes more bag holding.
I would really like to see a "reserve BTC" feature that would prevent the bot from using a set amount of available funds for anything other than covering fees for sales to ensure that there is always some money available to sell the coins when its time.