what do you suggest is the most profitable to trade at the moment?
is it advisable to increase the minimum profit to 1 from .6?
You can set it to anything you want, however be advised that CAT might try to sell (or buy) at prices completely out of the market margins.
My advise is to keep the default setting to be safe. CAT will try to trade at a price that will give you the maximum profit you can get, this setting only tells CAT to avoid trading below 0.6%
(buy price + 0.6% = minimum sell price, it will try to sell over but never under this price).