In the dog days of summer, this is great time to take a look at your ice fishing gear. Specifically your shanties, open them up and air them out. While you are at it, take a look for damage. A hole might have been made last season, or maybe you have rodent damage. Either way, take advantage of the warm weather to get your repairs done now.
Why mess with your coops during the summer? Because most of the glues on the market that can be used to patch your holes call for temperatures of at least 70 degrees to be effective. The best adhesive spray I have found is 3M #77.
What do you use for patch material? In most cases you can call the manufacturer to send you out a square of material. This is ideal, because then you get the material to match your shack. If this, for some reason is not an option, try going to a local canvas shop and purchase the material necessary. In extreme conditions, you might be able to take some canvas off a non-essential section of the shanty. That is a last resort option, and like I mention, most of the companies will send you out the proper material, just tell them how big of a section you need to complete the task.
If you have your coop stored in a small area, take it outside to open up. Get inside and take a good look for holes while the coop is closed up. Light is the best way to detect any new holes that might have occurred.
Another good reason to do this outside is ventilation. This is a glue, in a spray form, get as much open air as you can. It also helps in the drying process. Do it early enough in the day to have sit out for a good portion of the day to dry properly, specially with the humidity we have had lately.