First option is to pair your maxi skirt with a longer cardigan that can cover the backside, you can also do this in the spring and summer, just find a short sleeve cardigan.
Another great option is to find a pleated maxi skirt, that alone will hide the booty jiggle.
High/Low shirts are really popular right now and are perfect to pair with your maxi skirt.
The styles below would work better in fall/winter but the longer sweaters are a great option to cover the booty jiggle.
I have found that if you have maxi skirts that are more of a chiffon/ flowey material you don't have to worry about your backside acting up because the skirt flatters your behind all by itself.
Another great chiffon/flowey maxi skirt, very flattering.