yeah g'day Desi,

in repect of NSW the punter can take a four leg "parlay" for win or place which gives him/her the opportunity of having 11 individual all up bets:
1)1 all up2 all up3 all up4
2)1 " 2 " 3
3)1 " 2 " 4
4)1 " 3 " 4
5)2 " 3 " 4
6)1 " 2
7)1 " 3
8)1 " 4
9)2 " 3
10)2 " 4
11)3 " 4
As you can see, if you get two or three divs you can still win and if you get the 4 up then you can get a motza! Obviously there are variations to the example as shown above but space is limited but I hope you get the general idea. As per above the successful punter can get a four runner all up, 4 three runner all ups and 6 two leg all-up dividends. As you can see even the conservative punter can build a nice return for a relatively modest outlay.
Dutch betting is wagering on several runners to return a set amount, say 100:
eg. 2/1 = 33
3/1 = 25
4/1 = 20
as you can see, if any of the runners are successful you have a return of 100 units for an outlay of 78 units = 28% POT avery nice ROI.
Hope this helps. Give this method of wagering some thought.
Just one point to remember about this conservative method of wagering-yes, you do require a high percentage of winners/place-getters to achieve your goal but with a sound selection method, patience and a solid betting approach the percentage punter can return a respectable ROI.

Cheers.