I picked up some spike-it today and tried it out on a few fluke tails, it seemed to melt the fork in the tails together? is this normal, and does it do it to all plastics?

Never seen it do that with normal plastics but it will do it with Elaztech baits. 

Was the hook in the bait? I've had them melt using JJ's when the hook was inside on a few occasions.

Sure it didn't just stick the tails together and dry that way?

I do this all the time and it has never melted my flukes.

I dip fluke tails in it often, never had a problem.

Same here, never had a problem with spike it melting plastics.

I figured out it only did it to the bluegill colored flukes tried different colors with no problem... Weird to say the least

It was probably just making the tails stick together

I had this problem when I dipped my Swimming Senkos in Spike It. The bait would practically disintegrate over time. I switched back to Spike It markers and haven't really had the same problem since.

I also had the same problem dipping sweet beavers. The tail flaps were glued together and after I parted them, they seem to stay tacky. I gave the stuff away. Haven't used any since. Don't want it, don't like it, don't need it.

Hootie