For me, it would be an unstructured "all of the above". In order to meet my goals, I need a little of everything. I just bought a trainer and I'm practicing LSMs while watching movies on my laptop. My focus goes back and forth between the movie and what I'm doing on the bike as sometimes I have to put the power down for a minute or two. Other days of the week I'm on my other bike on a trainer in someone elses basement working on technique. I need to add weight/strenght training and a bit of swimming to help round thing out. How I will accomplish this is an unknown.