Gear track phone mount?

Using my phone for GPS and marking spots but I can't find a gear track phone mount solution

I was able to Frankenstein one out of RAM parts on Amazon but it is expensive

https://www.rammount.com/part/RAP-HOL-UN7B-354-TRA1U

https://www.amazon.com/RAILBLAZA-MOBI-Adjustable-Device-Holder/dp/B00AQVDRKS/ref=sr_1_4_sspa?dchild=1&keywords=kayak+phone+mount&qid=1618335769&sr=8-4-spons&psc=1&smid=A31HZKVHMVDZ77&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyTTAzMlVEQk9PWkJGJmVuY3J5cHRlZElkPUEwMDgzODEwSUdGTkZMTDFVRk1MJmVuY3J5cHRlZEFkSWQ9QTAzNDg2NDQzSlBMTlU0S1lLUzFMJndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==

I have one of these.... https://www.amazon.com/Nite-Ize-HandleBand-Universal-Smartphone/dp/B078LQYYRV/ref=asc_df_B078LQYYRV/?tag=hyprod-20&linkCode=df0&hvadid=309892393118&hvpos=&hvnetw=g&hvrand=9573309495156692724&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1014361&hvtargid=pla-456473638550&psc=1 
I really like it it is high quality and very secure. It is not a track mount but can easily be modified to be.

Use arm band style.  Good not just for kayaking.

https://www.amazon.com/Newppon-Rotatable-Running-Phone-Armband/dp/B07K1SVVFQ/ref=sr_1_7?dchild=1&keywords=phone+armband&qid=1618345401&s=electronics&sr=1-7