When I do ladders, pullups for ex., how ever long it takes to do a rep is the amount of time I rest between each rep. One rep, rest, two reps, rest, three reps, rest, etc. When I reach what would be failure, I start back over at one rep again.
Example 1,2,3,4,5 reps-1 set, 1,2,3,4 reps-2set, and so on. You can do as many sets like this as your body can handle. Just don't go to failure. Always leave a couple in the hole. This can be done with any exercise. Hope this helps.
This is exactly what we did, though I was damn near failure at the end! Keeping up with a 14 year old isn't as easy as I thought it'd be
Your doing them right then. Keep up the good work and keep the caulk and a towel handy.