I always use the square wave bolus – in fact, the only time I use anything else is when (a) I’m also giving a correction does, when I use the Multiwave (so the correction goes in immediately, and the rest over 30 mins) or (b) if I’m eating something that I know acts fast and is under about 10 grams cho. Admittedly, I have slow digestion, so my tolerance is about 10-15 grams (rather than 50 grams). An hour sounds quite a long time just for a standard meal though.
And for the record, I never eat more than 50 grams in one go (in fact, I rarely eat more than 40 grams in one go) because my innards just give up the ghost and refuse to work altogether if I give them too much to do. With resulting low bgs that wont react to glucose. Not nice. 100g? I’d be comatose…