I've had a bass raider 10e since 2013,now I'm debating on whether or not to drill holes in it to add some accessories, need some input on pros and cons of drilling holes in the plastic, I have used industrial strength velcro with luck, but I dont know if that stuff looses it strength or not,and I end up losing something....thanks for input

I've drilled a bunch of holes in my plastic kayak.  They're fine and don't leak.  What you want to do, is get some marine goop, and use some rubber washers on your bolts/pop rivets.  You drill the hole, dip the bolt or rivet in some marine goop, and then quickly set it and tighten it down before the goop dries.  Once you do that, it should be strong and water tight.  You might have to wipe off some excess goop when you're done.  

 

The adhesive in industrial strength velcro is pretty tough.  I've use it for lots of things and rarely had issues with it.  But with the heat and the water, plus the fact that you're trying to stick it to plastic, I doubt it could ever be near as strong or reliable as a bolt/rivet, properly done. 

Use some riv-nuts and silicone you'll be fine

yup done it a number of times on all my kayaks with stainless steel hardware, granted its been all above the waterline so never had leaks and I never sealed them with anythign

This post here will help you.  120+ pages of bass raider boats