I'm buying a SMB and reel to keep with me at all times. Some SMB's have weight incorporated at the bottom, some don't. The one I'm buying (Blue Reef 6' SMB w/oral or octo inflate w/dump valve) does not have the weight incorporated on the bottom of the SMB. Does anyone attach something like an 8oz or even 1 lb weight to the bottom to better keep it upright at the surface?? Asking for a friend, LOL!