I too just got a mamba I usually run everything in a 4fun! I got the 8.5 the big boat because i was kinda at the top of the 8.0 it is taking some getting used to but I am loving the way it punches holes and just runs through everything. I do sometimes still miss a turn here or there but get as far forward in the boat as possible that seems to help with the turning! It really is a fun boat not playful but that's not what i bought it for! I have been running it down LCC and despite a broken backband buckle I think it's a great boat for those runs were you just want a little volume! Hope any of this helps!
Normal is a setting on your washing machine!