I'd avoid tape if you're not totally shaved down there. Tucking really depends on how much you have to get out of the way - both penis and testicles. Obviously smaller is easier but still comes with draw backs. A lot of women use an undergarment called a gaffe to keep the penis back between the legs and the testicles packed up closer the their body. The tighter the clothing you are wearing the more difficult it will be to conceal a bulge no matter how much you tuck.