Is there any way to have my static logo show longer?

Yes.

The reason this happens is because the animated logo that comes with Hijack runs a tad "long" in terms of frame count.

To make your logo appear longer, use the animated logo editor in Jemplode to create or install your own animated logo that is shorter than the one in Hijack. If you like, you can modify the Hijack one so that it's shorter, or you can completely replace it with a single frame comprised of of just your logo.

A selection of animated logos (including the default 2.0 logo and the default Hijack logo) can be found at Riocar.org.