As destuvius said, waylay does *not* lag victim in any way.
People wimpy out of it all the time, which is *GREAT* counter
for victims expecting ambushes (set up wimpy as high as it will go)
assuming there's no trap room to snare, sometimes it's better
to take the ambush and stay and fight

What you probably saw on the logs was victim being surprised
and not prepared to react fast.

If you set up waylay *in advance* then it doesn't lag you either,
so you can be waiting with the next command already typed,
and once you see the ambush land *BAM* you hit <ENTER>.

Now, go play a ranger ;p