The "better" bet of the two is a combination patent.
But you would need to add an accumulator to it,each way if the conditions are suitable.That makes it 28 bets +2.Then ,remembering that the bet is a weighted staking plan,the accumulator should be of a smaller stake unit than that of the trebles.
The weighting being 3x singles stake
2x doubles stake
1x treble stake.
It should be obvious that a 4 timer comes along rarely,consequently the stake should be small.
Bookmakers hate the bet that is why it is not plastered over their shop walls.
Remember that to get any benefit from a Lucky 15 you have to back,effectively,14 losers!!!
Also remember that professional punters rarely bet on anything but singles,win or each way.
Try to remember the power of each way betting,consider a selection that is priced at 4/1 ( 1/5 odds a place),if you are convinced it is a sound win bet then the place must be a godsend as the "possible" downside to your bet,in case of accident,is to a £10 stake unit,£2.[£10 win ,lost £10 place ,return £18]
Your "likely" profit is £48 it follows you are now getting 23/1 for the win bet.That is the theory.
There are few things a bookmaker likes more than a Lucky 15,a Dundee Shuffle,which no self respecting native of Dundee would look at as a value bet,is one example.Another thing they relish is a punter that bets after drinking.
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Bookmakers also like a Lucky 15 for the ease with which it can be settled,using Pascal's Triangle,or crash block as we call it ,it can be settled in a matter of seconds.A combination patent takes slightly longer to settle.