I can only speak from my own limited to once experience canvassing. No-one was coerced, no-one was bullied - people were going out of their way to give their positive reasons for voting. Not just saying Yes to get us off their doorsteps! 
In fact, a number of them were just in briefly having been out campaigning themselves...... 
23 Yes, 2 No, 2 Undecided (verging towards No but as Italians didn't think it was their place to vote - even though we said that they should, it was a vote open to all living in Scotland), 2 Poles who didn't think they could vote so hadn't registered and about 20 not in (not surprising on such a glorious day but looking at their windows, they may well have been in Buchanan Street - I know that's where a number of the people we canvassed were rushing off to). One guy refused more posters on the basis that he needed some daylight coming in! 
One guy had come up from Wimbledon to help with campaigning even though he didn't have a vote :) He wanted to feel that he had done his bit and been part of something historic.