Trifectas are tricky ************s.
Thats why we suggest a bank to withstand 50 outs.
They are not for the faint hearted because they have a habbit of ripping your heart out through your butt.
It only takes a small handfull to recover.
One has to have the right temprament to take them on.
I feel you have the right idea of giving it a dry run first, as one should for any new punting idea .
It might not suit ones temprament after analysing the stats & with trifectas ,the stats will be all over the shop.

What is the most frustrating is when a 100/1 donkey gets in the placings with no previous form & pays a motsa.

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Cheers.