Tethering on a $30 Verizon e-mail and web smartphone data plan

If you're on Verizon Wireless and you'd like to tether using your smartphone, then you have to be on a data plan (or Mobile Broadband plan) that costs approximately $49.99 plus you have to pay a $15 tethering fee. Your monthly costs are $65.

On the other hand, Verizon offers a $30 data plan (called "e-mail and web for smartphone"), but you're not technically allowed to tether on this plan. So, is it possible to tether if you're on the $30 plan?

I only know of two ways this can be done:

1. Use PdaNet (must run on your smartphone and your PC)
   
2. Load a custom ROM that allows you to tether without the need for any special software

The proper way to tether on Verizon is to pay $65 each month and use VZAccess Manager (found at http://www.vzam.net).