i have 2 answers, both for different situations.
If i am fishing my syndicate water which is not a runs water and holds large fish. Then i prefer to fish on my own, wether there are alot of anglers there or not. Its just i am more dedicated!
If however i am fishing a runs water then i like to fish with mates, as i am not going to get much sleep and can have the crack with my mates also, and i dont need to be too dedicated and precise etc as its a runs water.
As for your question i would deffo fish, if your on the bank you have a CHANCE of catching if your not there then you have no chance. If i was you i would fish 2 in the margins with small pva bags and one mid water with a small bed of boilies around it, scattered well.