Another option for micro and groundbait is.. Have a tub of micros wetted down with a few 4mm in with them, put wetted micros on feeder with a couple of 4mm, and use as you normally would, Then have a bait tub/bowl of method groundbait mixed, and use that on its own with chosen hookbait, if using pellets on hook, you could try catapulting say two or three over the top where feeder has landed, using separate approaches like this will give you an idea on which is working the best, Use this in two different swims, then you have a throwaway line, As for moving the feeder, once you have cast out and put some feed down, leave it until you get a bite,but i never leave it longer than 15 minutes, that is my preference, others may say different. On some waters this could be a couple of minutes, others upto 15,Any longer i will either cast slighty longer or shorter or to the left or right.