I am sharing Blackys timer. It requires extensive sourcemod knowledge so this is not your average timer. It requires a MySQL database.
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For those who doesn't know: This is probably the best sourcemod bhop timer out there. It has got customizable replay bots, as many jump styles as you want, built in anti strafe hack, rank system with chat tags, world records with soundsd etc.
My best suggestion would be to take a look and test it out if you're interested.