Re: Closer to the wind question
To understand how your boat behaves, it is best to change one parameter at a time. Also I find it easier to understand by using the true wind direction rather than apparent wind since apparent wind direction will change depending on your boat speed.
The most efficient way of sailing close hauled is with both the head sail and main. However, if you desire to luff up and give up some speed then pointing higher will be possible with main sail only. That is because your head sail will luff earlier than the main. I find that when motor sailing that the head sail should furled and the main pulled in tight to improve windward ability. Going further to windward is possible, but then at some point the main will be luffing and that too must be taken in. Also ability to point will be impoved with following current.