It's not that you don't know how to attack it's that you are a natural counter fighter - like Ali and he made that work for him - backpeddling and counterpunching.
You are Ali not Tyson - remember that and use your long kicks the way Ali used his jab - and watch what Bruce did in the WOTD clip against Norris - footwork, speed, timing, accuracy.
It's all at the blog
Against the black belt he is an expert at fighting at that range with kix - so your experience, which is more general, could not be used when they isolated. At STMA we do iso sparring, and are really exploring it right now.
Just as Tank is an excellent boxer and gives people trouble in hands only punch range boxing phase, so you are good at long range largo kix - but against a TKD BB you are experiencing a challenge.
This is a good thing as you will be able to progress by fighting with opponents who specialise at that range. The same would happen if you grappled a Judo BB or boxed with a pro boxer.
To answer your specific question at the end:
think largo mano -
with the stick coming at your head you keep back and hit his hand -
in empty hand that translates to hit his arm with your "block" - or in this case his calf/shin
- don't try to hit his body or head at first - aim to hit his leg with your forearm - your "block" - the time to hit his torso with your counter technique will present itself
as for him being "too fast" and/or you not being "fast enough" remember the adage about it's not how fast it moves it's how quick it gets there - that is down to half beat
and the final and best option is interception -
but you can only learn that from me directly
and I have 2 exercises I can show you for making the entry work with a jab and a fouette
finally don't think of yourself as a TKD man, think of yourself as a savate man who isn't using lo kix - you will realise you are not as out classed as it may have initially appeared
one of my students once gave his friend and colleague a piece of advice to use in these situations which, ego aside, I do endorse:
"just think what would the Guv do against this guy, then do that"
you're a white tiger, he isn't, that's all you'll ever really need to beat him, the technique you use is just gravy
