Poking can be fun in some circumstances..but the sensation does go away too soon ..... and allows some recovery time so peak ticklishness abates... 
To create that 'symphony' of responses and reactions from your Lee/ play partner....The exploring until you find the right spot and then ''latching on"....keeping the intensity going as their ticklishness builds and builds and their eyes widen and they progress to deeper responses ...is the way to go..and latching on is usually associated with ribs, hips,  maybe thighs ...but latching on in that  concept means finding a spot like the tummy / low tummy....where you simply use a relentless, perfect skimming or other type of touch that is obviously putting your Lee into another orbit of ticklishness...in that case..you are tickling maybe lightly but still VERY intensely...like the tummy, underarms, armpits...all over the back..sometimes the soles and arches of the feet...❤️😈😊