Not a lot is done cheap on a bent ........

Apart from have the seat at it's most reclined and get ride of any excess weight.
How are your bent legs ??
I found it took over 1,000 miles before my leg muscles adapted to riding a bent.
Which tyres do you have ??
Schwable Tryker tyres are supposed to be fast.
I'll find that out when I next change my tyres.
Which seat do you have ??
The hard shell seat lets you put a little bit more power through the pedals.
Plus you can pull the back boom out a little and get a more reclined seating position.
That's how my Sprint is set up.
After that your looking at tail-boxes and front fairings.
Just remember, a good tail-box will give you twice the increase that a fairing does.