Should I send a sponsorship deck to companies I want to sponsor me?

No - sending unsolicited sponsorship decks via email is generally ineffective and can be a turnoff. Instead, try to schedule time with the sponsor representative, meet them in person at races, and build a relationship first. The most memorable interactions come from people who introduce themselves, have genuine conversations, and follow up appropriately - not from hard sales pitches asking for immediate decisions on 'gold, silver, or bronze' sponsorship packages. Focus on building rapport before presenting any formal proposal.