All great advice. Last night I laid both skis down next to each other and the two fins appear identical in shape. This does not really surprise me because the Radar and the HO have another thing common which is the boot mounting anchor locations. I guess I have all winter to stare, ponder, measure, consider, re-consider, switch, and then switch back (just something to do I guess) all the while dreaming and waiting for the next 6 months for the ice to melt. Common sense (which often times is a burden) tells me I should just keep the stock fin/set up and go find something else to do like find some cool stickers for it or something. (ha) Guess it's just the price I pay for buying a brand new ski in October in Wisconsin.