Hi DTB,
Well you can put a big engine and just drag the plane through the air but thats not fun.
I like to improve the aerodynamics first to see what the plane will do then add power after.
Thats just what i'm doing with my Avistar now.
On my older Super select 40 i'm clipping the wing tips and shaving them down and remove that 35* up slope at the tips.
Then i'm going to feather down the tips both on the bottom and top.
I hope to have the Avistar converted by the weekend but the weather is going to be in the 60's so I may get in some flight time,
Stay tuned because i'll be sending pictures this way.
Thanks for the post