Im worried that teaching a WI Course will require a lot more work. How can the workload remain manageable?
You don’t need to correct and grade every piece of student writing, particularly much of the informal, in-class writing you assign. If you explain your approach to students, you can collect and read assignments without spending time grading them, though you can refer to them in class or conferences. (Some instructors simply mark such assignments as done instead of assigning a letter grade.) You can also save effort—and improve the writing—by giving meaningful, early feedback on a small portion of a paper or on a prospectus, while saving the full correcting for the next-to-last draft, which will then be revised and resubmitted for a grade.