This is only a 10 watt panel and the mounts came with the boat so I dont know where to get them..
So far, I have used the boat from Sunday to today (Friday) with just the 10 watt panel and the outboard charging system (9.8 Nissan with the "rectifier/regulator" which actually works fairly well) and this morning I am down just 10 amp hours. That is the most down I have seen all week. This is with watching Saturday night live on TV in the boat on Sunday, using the auto stereo every day, GPS depth finder, VHF radio, charging the cell phone, charging an Ipad, LED lights.. I have just one battery (two six volt cells) and a battery monitor.. worked flawless.
If you dont have high loads like a fridge or spend a lot of time on your computer (Internet), you just dont need much power . That 10 watt stays on the boat all the time and is mostly there to keep the batteries topped up.