Raymarine Dragonfly 7 Series (Original 7 & New 7 Pro) - Review & Comparison

I've been running a Raymarine Dragonfly series fish finder ever since I started kayak fishing. Having used both the original Dragonfly 7 for some time, and now the newly released Dragonfly 7 Pro, I felt like now is a great time to do my independent review. Here it is for anyone considering a Dragonf...