More great questions IMO, and sensitively asked as you appreciate and accept I don't like to give too much away.
I'm lucky - or cunning, or both - to have good advice around me.
I have three people I collaborate with, but by far the most influential is "Leafy," whose other mantra (apart from actual profit being more important than ROI) is that correct staking is absolutely vital.
We operate on a scale from where, being (contrary to rumour) human and wanting to manage our mental health (which betting seriously challenges) we have anything from a "FOMO," (fear of missing out) or a "JIC," (just in case), as another collaborator labels it, to a "max" as Leafy says or, very rarely, what Leafy calls a "double max" - short story about that later.
My biggest bets are singles, I'm historically more inclined to bet win only (as is JIC guy) but Leafy is big on each-way for various reasons.
Nowadays I do a bit of both.
The multiples and exotics are for smaller stakes but to win more - often a lot more.
And as for Venetia Williams - tbh I think she's having a lousy season, but I did have a Patent up with her last year late November, she owes me nothing and it cost buttons to put her runners in multiples to "cop the lot" eight days ago and I did have a little patent on hers yesterday too.
It's a related contingency thing - it costs little and the rewards are huge (and the toll on my mental health avoided if I miss out!) if she turns a corner.
The story (apologies if I've told it before).
Phone rings, it's Leafy, so I pick up.
"You're going to like this," he starts.
He was right - I did, though the full details (it was broadly to do with a trainer making a big effort to organise an event for a long-time loyal owner) I won't go into.
Anyway, we decided it was a max bet and we got on at the opening 10/1.
Started 4/1 and won in cold blood by 15 lengths in a low-grade handicap chase.
Sadly, a few days later I read on the RP website the owner had passed away
Leafy must have read it at exactly the same time because a minute later the phone rang - it was Leafy: "If only we'd known he was dying - it would have been a double max!"
That's Leafy, that's me (because, laughing, I heartily agreed), we are both going to Hell, but we're nicking a few quid along the way.