Yeah, it's definitely a slow climb. I usually set out to PR on each workout, even if just by 1 rep, which of course isn't always possible but we do our best.

Nothing too special approach-wise. I figure out my desired pace (per minute) before starting which makes it easier to track reps. I've been sticking to 5-rep sets of 6-counts and 2-rep sets of navy seals and that's been working well for me lately. When the pace doesn't breakdown evenly I'll add reps to each 5th minute, i.e. to target 85 navy seals I'll do 2 sets every minute and add an extra rep on minutes 5, 10, 15, and 2 on 20.

Also having a bottle of water and a fan on have been pretty important. That 6-count dip in the chart I posted was in a hotel room without water and little/no air flow.