Double Bass Something to look at while practicing

Seems obvious now that I have discovered it but I think I have found an answer to my looking-at-my-left-hand problem.
I am a novice and have been struggling with my intonation for quite a while. Using my eyes more than my ears. But today I was actively staring at the map on my wall and dreaming up road trips while doing scales - and found things miraculously started to click into place.
Those more experienced than me will know what's going on here, but it really seems to work. I am one happy bunny.
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You’ll hit a point one day where you won’t need to look at the fingerboard in the lower positions and your fluency will continue to move further up (or down) into thumb position. I recommend the George Vance books to get more comfortable in upper positions early on as well as Boardwalkin’ by Hal Robinson. Also, make sure you spend at least as much time on arpeggios as scales. I spent far too much time on scales in the beginning and arpeggios are closer to the movements you will be executing when playing written music or improvising.
 
That’s a great idea. I look at my tuner sometimes when I practice.

Not sure how to apply this in 2023 but my first teacher whacked our hands with a wooden ruler if we looked at the neck instead of our sheets. It worked.
 
My son is starting percussion at school in the fall (he's had drum lessons for years) and in order to play the drums, you have to graduate from the bell kit.

The rules are, you have to play various melodies correctly, proper stick form, etc. and you cannot look at the bars of the instrument.