lithium batteries

[Piranha]

Just chasing some feedback from those that are using Lithium batteries for their leccys .
I have a small poly boat and have been running a 105ah agm but can't get a full day fishing in the flow of the murray, I looked at 150ah agm but their a bit big and well over 40kg compared to lithium 14kg which has 25% more power.

I know obviously the prices are huge but so are the stated lifespans so I'm keen to hear from those that run them.

Cheers