any body have any thoughts on trailers thinking aluminum for a 37 foot boat

Myco

Pricey, but I believe Eagle is among the best.

what kinda $ do you think for myco alum and steel

I would go with MYCO without question. They are a little more expensive than some others, but they are well worth it. I have owned three MYCO triple axle trailers and have had no problems with any of them! As far as price range, I would say that it would depend on the setup of the trailer. All three of mine have been pretty well loaded (drive guards, boxes, etc...) and the average cost was around $13,000. I have had both steel and aluminum. One seems to tow as well as the other and they both look great. So, just a guess, I would say that a MYCO for a 37' boat would cost between $9K and $15K depending on the specs and options. Again, this is just a guess and you may be able to build one for less money. Also, I know that this is a pretty broad range, but as with anything being custom built, the sky is the limit! Here is the web page for MYCO. Try calling them to find your nearest dealer.

www.mycotrailers.com

Lynch Mob (F2-3)

You might want to think about electric-over-hydraulic brakes. With a 37 and a steep ramp you will still have brakes backing down the ramp instead of just the truck stopping the rig. A buddy has these on his Myco with a 43 Black Thunder and said it's the only way to go.
mike