So I'll admit to coasting,, late in the straight or between chicanes.
I would come off gas, brake get to entree speed then set body position. One thing at a time to keep from upsetting the bike and ME (lol)
So the coast many do is during the throttle blip many or at least I wasn't on the brake.
I would be braking or downshifting and blipping the throttle.
It was suggested to brake and blip at the same time.
That in of it self was interesting as my brakes are real sensitive and during the blip would get fork dive.
Talked with prior owner and asked how he dealt with that. (he's a A rider and now in WERA) Simple no blip just brake hard and let the slipper clutch deal with it.
SO at my age, and with many years of bad habit's I try to work on one thing at a time.
May never make it to the A group, and don't care. I'm having a blast and it's just a letter for me. Right now it's the most fun I can have with my cloths on.
For me, i don't use a timer and don't plan on using one. I know when I'm doing good and when I'm sliding back into bad habit's.
I agree with the guy you talked to. I've never been able to get good at blipping and gave up on it very quickly. With slipper clutches, it's piece of cake, you never need to blip, but even without a slipper I still don't blip and I learned to just be smooth with the clutch to not upset the chassis and break the rear tire loose. I had a big 1200cc v-twin (1198) without a slipper so I got really good at doing that because that bike was a beast. Now everything else seems easy, although my zx6r has an STM slipper that's smooth as butter!
Getting to be smooth with the clutch is important because it can really help in some turns where you have to downshift while you're at lean. I haven't encountered many turns like that though, maybe a couple out of all the tracks I've been to.
I agree that you should downshift and brake at the same time. The good way, and fast way, to do it when coming at the end of a straight into a turn is this:
1. Let off the throttle, and as you do that, also get in position. Move your butt off the seat which ever way the turn goes, thigh up against the tank, and all that good stuff.
3. Assuming you slow down by a lot and have do downshift, do your downshift very shortly after you get on the brakes. Don't let the revs drop too much. Get your shifts done as quick as possible.
4. As you're approaching the turn start easing off the brakes as you're turning in (trail-braking). Sometimes, depending on how much time and space you have available and how many times you have to downshift, you may still need to be slipping the clutch as you're leaning into the turn. I've had times when I'm only fully letting off the clutch around the middle of the turn, right before getting on the gas.
5. Trail-brake as long as needed and once your bike is pointed the right way, start getting on the gas. No coasting.