So I've been reviewing another product called CognitoForms. For free they will allow save and resume on the forms you create in case someone can't finish in time (they will allow an 8 hour time limit). We have some surveys that are important to our dog trainers that get submitted blank because it takes longer than 20 minutes to fill out. Also, it is essential information that can't be decreased. It's kind of outrageous that they only have 20 minutes to fill out a form.