One can weave inside as the primary action, or you could get in with proper body punching
as a counter punch -e.g opponent leads with jab and you throw short right to body
but need to be alert to weaving into a right uppercut or right hook...

in 1968, in the Tacoma Golden Gloves, I weaved from a right hand - but it was a fake right
and I weaved into a RAY LAMPKIN left hook - ouch.