Thanks both, good advice and I've seen the de-wit one.
We broke on, but the second was okay. It would have come from a garden centre.
It dug really neat holes in the lawn, perfect for larger bulbs. I remember bending down all the time anyway to crumble the soil back in. I noticed Monty just popped the whole plug back in. Bulb foliage must be made of stronger stuff than I allowed for!
For clusters of smaller bulbs it was quicker to lift a flap of lawn up & tuck them all under, as they can have closer spacing & less depth.
Where the soil is looser in a flower bed & a lot of bulbs are going in, I find staying down & using a trowel much quicker.