Checkbox Form Object - Use the checkbox form field only if you are wanting to add interactivity to your checklist. The checkbox form field, found in the Forms toolbar, can link to a cell in the spreadsheet without requiring any Visual Basic programming. The linked cell will be a boolean value TRUE or FALSE. Like the drawing objects, working with a large number of checkboxes can get messy.
Of course, you will ‘sell’ this offer with professional sales copy, some great headlines, and maybe even some bullet points. But the general idea here is to introduce yourself to this new cold traffic visitor, let them know what you are about, let them know that you can help them, and convince them that the first step to solving their problem is to opt-in to your free offer. 
In professional diving, checklists are used in the preparation of equipment for a dive, and to ensure that the diver and life support systems are fully prepared before they enter the water. To a lesser extent, checklists are used by a minority of recreational divers, and by a larger proportion of technical divers during pre-dive checks. Studies have shown checklists to be effective at reducing the number of errors and consequent incidents.