Yeah, i can't justify a GoPro for the few times a year i use it, so i bought something similar to this:
https://www.amazon.co.uk/Crosstour-Waterproof-Underwater-Wide-angle-Rechargeable/dp/B073WWSYJK/ref=sr_1_2_sspa?ie=UTF8&qid=1546108657&sr=8-2-spons&keywords=action+camera&psc=1
Does the job - here's an example:
https://zerolifebuild.blogspot.com/2017/09/zedster-makes-friends.html