A pic might help.

If we're talking about a half log hide they are not very good as they do not offer a good feeling a security. Your snake may feel just as safe where it is as it does in the hide.

In a hide you want something that is fully enclosed with only one door. These hides from Reptile Basics are a great choice. They are sturdy and easy to clean.

If your not using a half log I would think it may be a temperature issue.