I have a heavy 2.5 year old DD. She about 39 pounds. Today I put her in the Maya Wrap on my back to see if it was feasable to still use the sling. The reason I ask is because I'd like to get out & walk with her more...but I fear having to carry her half the time because she gets tired. There are some lakes I could walk around, but I don't want to get halfway around & have to carry her the rest of the way. My arms get tired. I used to sling her all the time until she was 18months or so, but then it seemed like it was getting uncomfortable to do a front carry or really even a hip carry because it pulled on my shoulder too much. The back carry seems ok, but I wonder what everybody else does with older toddlers. Do you use backpacks?