Bream
There is so much that we will probably never know, but I have a theory based in part on knowledge and in part on my imagination sparked when I first read the letter VDW wrote to Tony Peach in February 1996 and partly reprinted on page 6 of Mr Peach's "Systems in My Racing":
"Later I was asked to write "Systematic Betting" a title I didn't like, but never argued over."
Given that VDW had, helpfully, gone out of his way several times to distinguish a system from what he claimed to use, a methodical approach, since I first read that sentence it has always jarred with me.
I think "Systematic Betting" was published around 1990, some twelve years after the first "VDW" letter was published in the Sporting Chronicle Handicap Book. And VDW would have us believe that in 1978 he was achieving a high strike rate which no one, as far as I know, has claimed to be able to emulate, except Lee in the very limited field of Wing And A Prayer types. IF the claim by VDW was true, by 1990 he would have been quite a rich man, to put it mildly, even if he had only found the golden touch, or perhaps one might call it the key, in 1978.
We know VDW was paid for his Sporting Chronicle Handicap Book articles, because Tony Peach has said so. He was obviously paid for "Systematic Betting." Yet, he didn't challenge the proposed title. I find it difficult to believe that Raceform would have rejected an alternative that better reflected VDW's approach, such as "Methodical Betting" . Also, some of the content of "Systematic Betting" really doesn't ring true to me from VDW's previous writings. Chapter Six, "Speed figures", especially as VDW had been reasonably dismissive of them previously.
For what is is worth, probably not very much, my take is this.
1) VDW's strike rate claims were phoney, included to do exactly what they did in my case and I am sure others, attract interest.
2) VDW was never at any time what could reasonably be called rich. Yes, he did go on cruises, including round-the-world ones; I've seen the evidence for that. But as has been posted earlier on this thread, one doesn't have to be rich
per se to go on cruises. Obviously going on extensive ones, such as round-the-world, does require significant money, and VDW had that from time to time. But
not from betting. He has what at the time was a significant inheritance when his mother died and to put it politely he exercised control of the wealth of his third wife. Those are facts (and his daughter-in-law's effort to recover her mother's money was the subject of litigation and a negotiated settlement). What is speculation is that, while in ordinary employment and then retired, and long before his third marriage, VDW found the payments via Mr Peach, modest though they would have been, and whatever Raceform paid him for "Systematic Betting", not insignificant additions to his earnings and later his old age pension. If he really was achieving the kind of strike rate he claimed, such payments would have been neither here nor there to him.
3) if one takes the above line of thinking as likely, it then follows that in his later writing VDW was responding to demand - from Tony Peach for articles for the SCHB and later from Raceform for the book - and glad to have the opportunity to make a few pounds in doing so. He therefore came up with variations on his basic theme - which I think was and is right - that class, ability and conditions are the essential elements in finding winners, and back-fitted examples that "proved" his point for a new "method". And, and this is speculation based in part on something I was told, I think by Tony Peach but I am not sure, that VDW included bits in "Systematic Betting" at Raceform's request, especially the Speed figures chapter, given that the Sporting Chronicle Handicap Book, later Raceform Update, made quite a feature of them, with Split Second etc. (Indeed, in my fantasy, VDW didn't write chapter Six, but that some bright young person at Raceform noticed that Roushayd worked with speed figures and put together the Desert Orchid material for him. When I wrote to Raceform about "Systematic Betting", I got a very polite but totally unhelpful response.) I further suspect that VDW didn't challenge "Systematic Betting" as a title because, far from being the prized author in the box seat whom Raceform would have been more than happy to accommodate, he was glad to write for them for the fee offered and did not want to rock the boat).
From this broad position, I think it is probably pointless to try to re-construct VDW's several methods, and better to work on the assumption that he was right about finding winners being a matter of balancing class, form and conditions but that the individual methods were essentially simply back-fitted examples labelled in different ways to meet the requests for new material. I am not saying that VDW's letters and aticles are without merit; far from it. But with due deference to Lee, the strike rates VDW claimed are so far beyond what seems probable, and so inconsistent with the known facts of VDW's wealth and his generally very modest living situation, as to invite incredulity.