Speeds above 20wpm have not really been covered on the Morse Crusade and it is only a recent inquiry that made me think about it and you are getting into an area where writing down the Morse on paper starts to get difficult. So how do you increase your Morse speed if you can’t write it down?
Presuming that you have a “Reflex Action” with all characters you have a choice of which road you want to go down with your Morse, Hard Copy where you will have to learn to touch type to be able to copy the Morse and “Just Learn Morse Code” is a good program to use for this. (I was trained to touch type at 60wpm and copy Morse at 30wpm)
Most fast Morse operators on the amateur bands take the Morse in their head up to 40wpm and only write down relevant facts of the QSO. This is achieved by lots of practice without putting pen to paper.The secret of this is to listen to random commonly used words at the speed you want to achieve and you can listen to it in the background while doing other things as this still works. You will find that your Morse proficiency increases.and Instead of getting instant recognition with characters you are getting instant recognition with words.
There are two freeware program that can help you gain a higher proficiency, they have been designed for high speed Morse but you can just use them at the speed that you wish to achieve. RufzXP and Morse Runner.