I'd just use the mount that came with the kit, I've never had any issues with the GP mount.I've tiried/own many types, GP adjustable, CG beam mounts, Dubro isolation mounts, DB soft mounts, MK, YS and Hyde soft mounts.For a sports application I'd use what ever soild mount you have available. Don't even bother going the moft mount route.I've mounted 1.20 OS and YS four strokes and moki 1.35 engines on simple light weight Goldberg fiber mounts and they've never gave any problems.Infact the only engine mount I've never had any luck with was the DB soft mount. Stay away from that one.