EXCHANGE multiples

no, im afraid

Manual approach
e.g.

£1 Patent
Horse A 2.30
Horse B 3.15
Horse C 5.00
£7 staked on normal exchange multiple

Manually;
£4 BFSP single on Horse A
if Horse A loses
£2 BFSP single on Horse B
if Horse A wins at say 4.00 BFSP
£14 BFSP single on Horse B
if Horse B loses
£1 BFSP single on Horse C
if Horse B wins at say 5.00 BFSP
£46 BFSP single on Horse C

Manual approach
e.g.

£1 Patent
Horse A 2.30
Horse B 3.15
Horse C 5.00
£7 staked on normal exchange multiple

Manually;
£4 BFSP single on Horse A
if Horse A loses
£2 BFSP single on Horse B
if Horse A wins at say 4.00 BFSP
£10 BFSP single on Horse B
if Horse B loses and Horse A has won
£5 BFSP single on Horse C
if Horse B loses and Horse A has lost
£1 single on Horse C
if Horse B wins at say 5.00 BFSP and Horse A has won
£46 BFSP single on Horse C
if Horse B wins and Horse A has lost
£6 BFSP single on Horse C

Problem with losing the multiples from here is when you get a big multi that stacks up from a small stake will you have the balls to stick what you're winning so far or will you reduce your stake and cost yourself less if the horse goes on to win.
i.e £10 accum £10 originally staked 10/1,10/1,10/1,10/1
horse a wins stick £110 on the next horse b wins stick £1210 on the next horse c wins do you stick £13310 as you should on the last one or stick on about £5000  be happy with your £8210 profit? potentially costing yourself £91410 should the last one win, whereas you don't care when you've originally staked £10.

Once that money's in your account it's yours until then it's the bookies if you know what I mean.

Robots would be good at exchange betting

lots of robots already part of the exchange betting  :-)