The attached is a transcript of a debate of sorts between avowed open theist Bob Enyart and a Calvinist (Ask Mr. Religion). In past debates with Calvinists Enyart claimed none had adequately answered his questions. I volunteered, and he accepted my proposal to provide him with substantive answers.
As background, the attached includes links to past debates Rev. Enyart had conducted at a site that is full of second and ninth commandment violations (beware).
The fifty or so questions asked by Rev. Enyart provide a useful introduction to how one may interact with open theist proponents.