Exactly this ^^^ I've used the half logs and my snakes never went in them. A cheap highly recommended option are the reptile basics hides. Don't get anything smaller then the medium, the smaller ones are tiny. Your snake looks like it would be good in the mediums. If you buy them get 2, one for hot and one for cool that way your snake can't play favorites and will regulate body temp correctly. They are very dark and secure and tons of people use them bc they are cheap but provide the necessary security for your snake. Plus they make a variety of sizes so you can buy bigger ones as your bp grows. I won't ever own any other kind of hide.
Here is the link if you wanna check them out.
http://www.reptilebasics.com/hide-boxes
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