OK, jumping the gun a little, but now is the time for planning. My form is getting better, and at some point I am going to have to start swimming with fitness in mind. I will revisit drills so as not to revert.
The question is, how does one gain fitness when one can only hold decent form for about 50m? Right now I rarely swim more than about 1100m total in any session because I quickly tire and can feel my technique go bye-bye, so I stop and get out.
Should I swim a 50, then rest for more time, and try to do bunches of those? Or should I try to go easier and go for 100m+? I worry a bit about trying to go easier, because I seem to really revert back to the bad habits when I try to go slow(er). Or maybe swim a 25 strong focusing on technique and speed, then swim the back 25 more cruising just trying to hold technique. Rest. Repeat.
Remember, my technique is delicately balanced (pun intended) at best. When I started this year with the drill work, I would generally have a 1:10-1:15 50m time. I am now swimming a couple 50s in around :55 after doing drills, but pretty quickly find myself back in the 1:10 range as my technique breaks down.
Oh yeah, my goal here is to do a 75-80 minute IM swim (with WS) and not be smoked. Anything else is just icing.
I can swim maybe 4x per week, with 2 shorter (:40 max) and 2 longer sessions, though 3x is more common.