IMO, I'm not convinced it's worth it to proceed.
1) Oral Forskolin has a decent abosortion rate (well; as good as most oral products) and is cheap.
2) A patch (just like an oral supp) will force this stuff to go systemic. See #1
Topical application of this stuff DOES CAUSE a localized effect from what I've read thus far but it's not like you are going to put patches convering every square inch of your body LOL
IMHO, patches would make more sense for products that have a crappy absoption rate and can be improved significantly thru use of a patch or transdermal agent (think resveratrol).