Bin thinking of what seems to be a maybe issue you have with newer boards .
they are all different ...and yes ,you have to sail them differently .
ive got a few boards in this size .130 Titan 125 rocket ,115 Patrick 115 rocket .
even though I'm 98 kgs now all have to be sailed differently .especially getting them going ,
which I think is the issues you are finding diffent ...to you long boards ...
1. Run them down wind a bit more than your long boards .
2. They will take slightly longer to get on the plane as there is a slight pause compare to a long board .
3 .top speed is better because you have less area in the water once planing .
4.better to gybe .
5 .lighter under foot ...which was a big nice difference I really liked .
i found the wider Titan a slightly earlier planer ,due to width ,but I prefer the 125 rocket as it takes off ,like a rocket .
due to the 69 wide it is a nicer board in the ocean in 17 knots .
If the ride does have issues getting planing ,it might be the weight of it plus width ...
carbon boards are way nicer and are like a corvette compare to a mini moke.
i think with time you will get to like the newer boards ...just give it more time ...
i hook in first ,front foot in second .then rear ...but what ever works for you .

hope you find the sweet spot soon