This is a great thread. I've been having similar issues. Perhaps you guys could give me some advice on what I've fumbled together. For reference I moved from Texas Method to 5/3/1 early december, I only up my training max 2lb or so every cycle because I feel I'm pretty advanced for the program, plus I'm on a diet because Texas Method left me with a fair bit of fat. Going up slowly like this also seems to negate the need for a recovery week, currently anyway, which works well for me personally. My previous max on the DL before I switched over was 505x5.
I too had tried DL weekly, but since I'm following the Full Body routine (squatting three times a week), the lower back work was too much.
I have decided to do all the DL workouts in one cycle and then miss the first 5's session on the first week of the next cycle out. Then I'd do another 3 weeks in a row and leave the 3's session out, then another 3 weeks and leave the 5/3/1 session out. I'd do a joker set or two after each workout, but nothing else.
The rest of my L-back work's done from squatting, maxing at a triple of 90% training max on a wednesday, and a single at 95% on a friday. This seems to work for me. In fact I think taking the DL work out entirely and focusing on bringing up my squat might be the better idea. It would feel so odd not including the DL however and I can't bare to do that.
Training max Squat - 530lbs
DL - 510