You work with the hand you are dealt. Sometimes you don't have enough people to use the more effective circle wading technique. The two person wading technique places the more stout person upstream with their back to the current and the smaller person downstream facing each other. Each person holds on to the other's shoulder straps. The upstream person breaks the water and forms an eddy for the downstream person. Each person supports the other, if one person slips - the other can help them regain their balance.