Yes and no. By signing our damage waiver you are not responsible for normal wear and tear on our units. Seams may develop tears in high traffic areas over a period of time. If this happens please alert us at once so we can remedy the situation. If however, damage occurs due to failure to follow our safety rules or negligence (i.e. pulling on the netting) you will be responsible for all damages up to and including replacement of the unit/blower, etc., which can cost thousands of dollars. We do not want you or us to be in that situation which is why we have you sign and initial on all of our safety rules so that you can be the trained operator.